Static field manual

Rebuild the useful world from earlier pieces.

Each page covers one technology — what it does, what feeds into it, and what it makes possible. Read up the tree to trace a modern tool back to sticks and stone, or down it to see what's blocking the next rung.

Seed cabinet

Hand-written pages

Field sketch of Abacus, highlighting abacus reference materials, counting, measuring rod, measurement.

measurement

Abacus

Abacus is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Abrasive grit, highlighting hard mineral sand, water settling test, material.

material

Abrasive grit

Hard granular material selected, sorted, and used to scrape, smooth, sharpen, polish, and test surfaces.
Field sketch of Adze, highlighting adze head and handle, axe, woodworking, tool.

tool

Adze

A transverse cutting tool used for hewing, hollowing, flattening, and shaping wood surfaces.
Field sketch of Alignment checking, highlighting cord, straightedge, counting, technical drawing.

test

Alignment checking

A workshop test practice for checking whether wheels, shafts, frames, holes, and guide surfaces point where they should.
Field sketch of Angle Gauge, highlighting angle gauge reference materials, counting, measuring rod, measurement.

measurement

Angle Gauge

Angle Gauge is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Animal Fat, highlighting animal fat supply, leather, cutting edge, material.

material

Animal Fat

Animal Fat is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Animal Harness, highlighting animal harness supply, woodworking, lashing, tool.

tool

Animal Harness

Animal Harness is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Annealing, highlighting annealing supply, firekeeping, charcoal, process.

process

Annealing

Annealing is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Anvil Stone, highlighting anvil stone supply, firekeeping, charcoal, tool.

tool

Anvil Stone

Anvil Stone is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Apprenticeship, highlighting workshop records, institution.

institution

Apprenticeship

A social technology for transmitting workshop habits, safety norms, quality standards, tool care, and tacit craft knowledge across workers and generations.
Field sketch of Automobile, highlighting mild steel, hardwood, cart, internal combustion engine.

artifact

Automobile

A self-propelled road vehicle that combines power, steering, braking, load-bearing wheels, fuel handling, and road testing.
Field sketch of Awl, highlighting point material and handle, cutting edge, bone and antler, tool.

tool

Awl

A pointed hand tool for piercing leather, fiber, bark, thin wood, and layout marks before stitching or pegging.
Field sketch of Axe, highlighting edge head and haft, cutting edge, timber, tool.

tool

Axe

A hafted chopping edge used for felling, rough timber conversion, splitting, shaping, and emergency demolition.
Field sketch of Balance Scale, highlighting balance scale reference materials, counting, measuring rod, measurement.

measurement

Balance Scale

Balance Scale is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Ball bearing, highlighting mild steel, abrasive grit, machining, go/no-go gauge.

artifact

Ball bearing

A rolling bearing using hardened balls between races to reduce friction in wheels, shafts, tools, and instruments.
Field sketch of Band brake, highlighting leather, mild steel, friction material, lever.

artifact

Band brake

A flexible friction band that tightens around a drum to slow a shaft, wheel, or transmission member.
Field sketch of Bark, highlighting bark supply, timber, cutting edge, material.

material

Bark

Bark is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Bark Fiber, highlighting bark fiber supply, timber, cutting edge, material.

material

Bark Fiber

Bark Fiber is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Barrel, highlighting barrel supply, woodworking, water, artifact.

artifact

Barrel

Barrel is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Basketry, highlighting flexible stems or splints, cordage fiber, process.

process

Basketry

The craft of weaving flexible plant, bark, root, reed, or fiber materials into containers, frames, strainers, traps, and lightweight structures.
Field sketch of Batch labeling, highlighting labels and records, workshop records, writing, institution.

institution

Batch labeling

A simple recordkeeping practice that attaches names, marks, or symbols to material lots, tests, failures, and trusted samples.
Field sketch of Beeswax, highlighting wax comb, firekeeping, workshop records, material.

material

Beeswax

Moldable wax from beekeeping or honey harvest used for seals, patterns, lubrication, waterproofing, and tablets.
Field sketch of Bellows, highlighting bellows supply, firekeeping, charcoal, tool.

tool

Bellows

Bellows is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Bicycle, highlighting timber, metal strip, wheel and axle, spoked wheel.

artifact

Bicycle

A narrow human-powered vehicle that turns balancing, light wheels, low-friction bearings, steering, and workshop alignment into efficient personal transport.
Field sketch of Birch Bark, highlighting birch bark supply, timber, cutting edge, material.

material

Birch Bark

Birch Bark is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Bloomery Furnace, highlighting bloomery furnace supply, firekeeping, charcoal, tool.

tool

Bloomery Furnace

Bloomery Furnace is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Bog Iron, highlighting bog iron supply, stone, scratch hardness test, material.

material

Bog Iron

Bog Iron is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Bone and antler, highlighting animal remains, abrasive grit, material.

material

Bone and antler

Hard animal materials shaped into points, wedges, handles, needles, bearings, toggles, scrapers, and small tool parts.
Field sketch of Brick Clay, highlighting brick clay supply, clay, kiln firing test, material.

material

Brick Clay

Brick Clay is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Brickmaking, highlighting brickmaking supply, clay, woodworking, process.

process

Brickmaking

Brickmaking is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Bridge Trestle, highlighting bridge trestle supply, measuring rod, workshop organization, artifact.

artifact

Bridge Trestle

Bridge Trestle is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Brine, highlighting brine supply, water, storage jar, material.

material

Brine

Brine is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Bucket, highlighting bucket supply, woodworking, water, artifact.

artifact

Bucket

Bucket is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Camshaft, highlighting mild steel, lubricating oil, machining, gear cutting.

artifact

Camshaft

A timed shaft with lobes that open valves or actuate mechanisms in repeatable sequence.
Field sketch of Carbon Black, highlighting carbon black supply, firekeeping, charcoal, material.

material

Carbon Black

Carbon Black is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Carburetor, highlighting brass, mild steel, gasoline, fluid metering.

artifact

Carburetor

A mechanical fuel-and-air metering device that lets a gasoline engine draw a combustible mixture under changing load.
Field sketch of Cart, highlighting timber, rope, wheel and axle, woodworking.

artifact

Cart

A wheeled load carrier that combines wheels, axle support, frame, load bed, pulling method, and maintenance habits.
Field sketch of Casting Mold, highlighting casting mold supply, firekeeping, charcoal, tool.

tool

Casting Mold

Casting Mold is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Ceramic temper, highlighting sand or grog, clay, water settling test, material.

material

Ceramic temper

Non-plastic additions such as sand, grog, shell, grit, or fiber blended with clay to control shrinkage, cracking, workability, and fired behavior.
Field sketch of Chain, highlighting chain supply, wire drawing, anvil stone, artifact.

artifact

Chain

Chain is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Chalk, highlighting chalk or soft limestone, stone, water settling test, material.

material

Chalk

Soft white limestone material used for marking, whitening, fillers, mild abrasive work, and lime-related supply chains.
Field sketch of Charcoal, highlighting wood, firekeeping, clay, material.

material

Charcoal

Carbon-rich fuel made by heating wood with limited air, useful where cleaner, hotter, lighter, or more predictable fuel is needed.
Field sketch of Charcoal Hearth, highlighting charcoal hearth supply, firekeeping, charcoal, tool.

tool

Charcoal Hearth

Charcoal Hearth is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Chassis frame, highlighting sheet steel, threaded fastener, mild steel, riveting.

artifact

Chassis frame

A rigid vehicle foundation that keeps axles, engine, body, and controls aligned under road loads.
Field sketch of Chisel, highlighting edge blank and striking handle, cutting edge, stone hammer, tool.

tool

Chisel

A driven or pushed edge tool for cutting recesses, trimming joints, cleaning holes, and shaping hard materials.
Field sketch of Clamp, highlighting cord, wedge, frame, or screw-like pressure part, rope, woodworking, tool.

tool

Clamp

A holding device or tied arrangement that keeps work still while cutting, drilling, gluing, drying, or assembly happens.
Field sketch of Clay, highlighting water, water settling test, material.

material

Clay

Fine mineral sediment that can be shaped wet and hardened by drying or firing for vessels, bricks, molds, tablets, and kiln structures.
Field sketch of Clay Slip, highlighting clay slip supply, clay, kiln firing test, material.

material

Clay Slip

Clay Slip is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Clay tablet records, highlighting workable clay and stylus, clay, writing, artifact.

artifact

Clay tablet records

Durable written records impressed into clay for batches, tallies, drawings, ownership, and teaching notes.
Field sketch of Clutch, highlighting leather, mild steel, plain bearing, friction material.

artifact

Clutch

A controllable coupling that lets a rotating power source connect to or disconnect from a driven load.
Field sketch of Coopering, highlighting coopering supply, woodworking, water, process.

process

Coopering

Coopering is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Copper Ore, highlighting copper ore supply, stone, scratch hardness test, material.

material

Copper Ore

Copper Ore is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Cordage fiber, highlighting fibrous plants, cutting edge, material.

material

Cordage fiber

Plant or animal fiber selected, extracted, cleaned, and bundled for rope, thread, lashings, nets, basketry, and weaving.
Field sketch of Counting, highlighting knowledge.

knowledge

Counting

A shared method for keeping track of number, order, quantity, and repeated work.
Field sketch of Crankshaft, highlighting mild steel, plain bearing, machining, lathe.

artifact

Crankshaft

A shaped rotating shaft that turns piston motion into rotary power while surviving repeated bending and torsion.
Field sketch of Crop Rotation, highlighting crop rotation records and teaching stock, workshop records, seasonal calendar, institution.

institution

Crop Rotation

Crop Rotation is a practical social practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Crucible, highlighting crucible supply, firekeeping, charcoal, tool.

tool

Crucible

Crucible is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Cutting edge, highlighting edge material, stone hammer, abrasive grit, tool.

tool

Cutting edge

A sharpened stone, bone, shell, wood, or metal edge used for cutting, scraping, trimming, marking, and shaping workshop materials.
Field sketch of Cylinder boring, highlighting mild steel, cast iron, lathe, machining.

process

Cylinder boring

A precision machining process for making round, straight internal bores in engine cylinders, pumps, and sliding parts.
Field sketch of Differential gear, highlighting mild steel, ball bearing, gear cutting, drive shaft.

artifact

Differential gear

A gear assembly that splits drive torque while letting left and right wheels rotate at different speeds.
Field sketch of Drainage Ditch, highlighting drainage ditch supply, measuring rod, workshop organization, process.

process

Drainage Ditch

Drainage Ditch is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Drill press, highlighting mild steel, hardwood, hand drill, workbench.

tool

Drill press

A guided drilling tool that holds a rotating bit square to the work for repeatable holes and fastener patterns.
Field sketch of Drive shaft, highlighting mild steel, lubricating oil, lathe, alignment checking.

artifact

Drive shaft

A rotating shaft that carries torque between engine, transmission, axle, pump, or other separated mechanisms.
Field sketch of Drying rack, highlighting wood, reed, cord, or basket frame, woodworking, basketry, tool.

tool

Drying rack

A raised ventilated support for drying timber, clay pieces, fibers, paper sheets, hides, and test samples.
Field sketch of Dyeing, highlighting dyeing supply, water, public safety, process.

process

Dyeing

Dyeing is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Factory assembly line, highlighting workbench, tally stick, workshop organization, interchangeable parts.

institution

Factory assembly line

A workshop organization pattern that arranges people, fixtures, parts, records, and movement into a repeatable production flow.
Field sketch of Field Survey, highlighting field survey reference materials, counting, measuring rod, measurement.

measurement

Field Survey

Field Survey is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Fired Brick, highlighting fired brick supply, clay, kiln firing test, artifact.

artifact

Fired Brick

Fired Brick is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Firekeeping, highlighting fuel, water, process.

process

Firekeeping

The practical discipline of starting, feeding, observing, containing, banking, extinguishing, and teaching controlled fire for workshop use.
Field sketch of Flax fiber, highlighting flax plants, cordage fiber, material.

material

Flax fiber

Long bast fiber from flax stems, prepared for thread, cordage, woven cloth, fine lashings, and composite workshop uses.
Field sketch of Flaxseed Oil, highlighting flaxseed oil supply, water, workshop records, material.

material

Flaxseed Oil

Flaxseed Oil is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Flint, highlighting knappable flint or chert, stone, stone hammer, material.

material

Flint

A fine-grained knappable stone prized for sharp flakes, scrapers, points, strike tools, and early precision edges.
Field sketch of Ford Model T, highlighting mild steel, gasoline, automobile, gasoline engine.

artifact

Ford Model T

A mass-produced early automobile that combines a gasoline engine, planetary transmission, steel chassis, rubber tires, factory inspection, and service culture.
Field sketch of Forge Hearth, highlighting forge hearth supply, firekeeping, charcoal, tool.

tool

Forge Hearth

Forge Hearth is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Fuel tank, highlighting sheet steel, gasoline, fuel storage, artifact.

artifact

Fuel tank

A sealed and mounted container for carrying vehicle fuel while resisting leaks, vibration, contamination, and unsafe handling.
Field sketch of Gasoline, highlighting petroleum, storage jar, oil refining, material.

material

Gasoline

A volatile petroleum fuel fraction used in spark-ignition engines, treated here as a supply-chain and safety node rather than a recipe.
Field sketch of Gasoline engine, highlighting lubricating oil, mild steel, internal combustion engine, gasoline.

artifact

Gasoline engine

A spark-ignition internal combustion engine optimized around volatile petroleum fuel, carburetion, cooling, and regular maintenance.
Field sketch of Gear cutting, highlighting mild steel, lubricating oil, machining, indexing.

process

Gear cutting

A repeatable cutting and indexing process for making gear teeth that mesh smoothly under load.
Field sketch of Glass Sand, highlighting glass sand supply, stone, scratch hardness test, material.

material

Glass Sand

Glass Sand is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Go/no-go gauge, highlighting mild steel, stone, standard weights, measuring rod.

test

Go/no-go gauge

A fixed inspection tool with accepting and rejecting sides that quickly sorts parts by whether they fall within useful limits.
Field sketch of Granary, highlighting granary supply, basketry, storage jar, artifact.

artifact

Granary

Granary is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Gravel, highlighting gravel supply, stone, scratch hardness test, material.

material

Gravel

Gravel is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Grog, highlighting fired clay scrap, clay, kiln firing test, material.

material

Grog

Crushed fired clay or sherd material reused as ceramic temper for controlling shrinkage, cracking, and texture.
Field sketch of Hand drill, highlighting straight shaft, cutting edge, stone hammer, tool.

tool

Hand drill

A hand-powered boring tool for making holes in wood, bone, leather, clay, shell, and soft stone.
Field sketch of Hardwood, highlighting hardwood supply, timber, cutting edge, material.

material

Hardwood

Hardwood is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Heddle, highlighting cord, reed, bone, or wood, loom, cordage fiber, tool.

tool

Heddle

Loops, rods, or eyes that separate selected warp threads so weaving sheds can be repeated quickly.
Field sketch of Hemp Fiber, highlighting hemp fiber supply, cordage fiber, spindle, material.

material

Hemp Fiber

Hemp Fiber is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Hide glue, highlighting collagen scrap, water, firekeeping, material.

material

Hide glue

Reversible collagen glue made from animal scrap, useful for woodworking, bindings, repairs, sizing, and temporary fixtures.
Field sketch of Hinge, highlighting hinge supply, wire drawing, anvil stone, artifact.

artifact

Hinge

Hinge is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Hoe, highlighting hoe supply, woodworking, lashing, tool.

tool

Hoe

Hoe is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Hoof, highlighting hoof supply, leather, cutting edge, material.

material

Hoof

Hoof is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Horn, highlighting horn supply, leather, cutting edge, material.

material

Horn

Horn is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Horn Glue, highlighting horn glue supply, leather, cutting edge, material.

material

Horn Glue

Horn Glue is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Hurdle, highlighting hurdle supply, clay, woodworking, artifact.

artifact

Hurdle

Hurdle is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Ignition coil, highlighting copper wire, iron ore, iron core, artifact.

artifact

Ignition coil

An electromagnetic winding assembly that turns low-voltage pulses into higher-voltage ignition pulses.
Field sketch of Ink, highlighting carbon black, binder, charcoal, writing.

material

Ink

A mark-making fluid or paste that carries pigment or dye onto paper, parchment, wood, clay labels, or other record surfaces.
Field sketch of Interchangeable parts, highlighting mild steel, paper, technical drawing, go/no-go gauge.

knowledge

Interchangeable parts

A manufacturing discipline where parts made at different times or stations fit without individual hand matching.
Field sketch of Internal combustion engine, highlighting cast iron, mild steel, piston and cylinder, crankshaft.

artifact

Internal combustion engine

A heat engine that burns fuel inside a cylinder to push a piston, requiring precise containment, ignition, cooling, and lubrication.
Field sketch of Iron Ore, highlighting iron ore supply, stone, scratch hardness test, material.

material

Iron Ore

Iron Ore is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Kiln, highlighting clay, fuel, charcoal, tool.

tool

Kiln

A heat-retaining enclosure for firing clay, drying materials, making lime, and later supporting higher-temperature workshop processes.
Field sketch of Kiln firing test, highlighting labeled test tiles, kiln, clay, test.

test

Kiln firing test

A comparative test practice for judging clay bodies, temper, kiln placement, fuel behavior, and finished ceramic quality without relying on guesswork.
Field sketch of Knot tying, highlighting rope or cord, rope, tensile test, knowledge.

knowledge

Knot tying

A practical body of tying patterns for fastening, joining, adjusting, lifting, nets, lashings, and temporary fixtures.
Field sketch of Land Boundary Marker, highlighting land boundary marker reference materials, counting, measuring rod, measurement.

measurement

Land Boundary Marker

Land Boundary Marker is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Lashing, highlighting cordage and bearing pads, rope, knot tying, process.

process

Lashing

The binding of parts with cord, fiber, leather, or sinew so frames and tools can be assembled without rigid fasteners.
Field sketch of Latch, highlighting latch supply, wire drawing, anvil stone, artifact.

artifact

Latch

Latch is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Lathe, highlighting mild steel, hardwood, workbench, plain bearing.

tool

Lathe

A machine tool that rotates work against a cutting tool to make round parts, true shafts, threads, bushings, and patterns.
Field sketch of Lead Ore, highlighting lead ore supply, stone, scratch hardness test, material.

material

Lead Ore

Lead Ore is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Lead-acid battery, highlighting lead ore, glass, acid handling, artifact.

artifact

Lead-acid battery

A rechargeable storage battery using lead plates and acid electrolyte, included here as a high-level prerequisite for vehicle electrical systems.
Field sketch of Leaf spring, highlighting mild steel, spring steel, annealing, artifact.

artifact

Leaf spring

A stack or strip of spring metal that flexes under load to soften vehicle shock and keep wheels in contact with the road.
Field sketch of Leather, highlighting animal hide, cutting edge, material.

material

Leather

Preserved animal hide prepared as flexible sheet, strap, hinge, gasket, bearing cover, bucket, bellows part, and protective material.
Field sketch of Level trough, highlighting trough or tube and water, water, woodworking, measurement.

measurement

Level trough

A water-based level reference used to compare heights, set posts, transfer grades, and teach horizontal reference.
Field sketch of Lever, highlighting hardwood, tool.

tool

Lever

A rigid bar used around a fulcrum to trade distance for force in lifting, prying, pressing, and control mechanisms.
Field sketch of Lime material, highlighting limestone, chalk, or shell, chalk, firekeeping, material.

material

Lime material

Calcium-rich stone, shell, or chalk recognized as a precursor for plasters, mortars, washes, and alkaline workshop materials.
Field sketch of Limestone, highlighting limestone supply, stone, scratch hardness test, material.

material

Limestone

Limestone is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Linen Thread, highlighting linen thread supply, cordage fiber, spindle, material.

material

Linen Thread

Linen Thread is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Loom, highlighting frame stock and thread, weaving, timber, tool.

tool

Loom

A frame or weighted setup that holds threads in order and under tension while cloth or bands are woven.
Field sketch of Loom weights, highlighting clay, stone, or dense scrap, clay, kiln firing test, tool.

tool

Loom weights

Weights that tension warp threads on simple looms, usually made from fired clay, stone, or reused dense objects.
Field sketch of Lost Wax Casting, highlighting lost wax casting supply, firekeeping, charcoal, process.

process

Lost Wax Casting

Lost Wax Casting is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Lubricating oil, highlighting animal fat, flaxseed oil, material.

material

Lubricating oil

A friction-control material for bearings, gears, engines, and sliding tools, sourced from animal, plant, mineral, or petroleum routes.
Field sketch of Machining, highlighting mild steel, lubricating oil, lathe, drill press.

process

Machining

Controlled cutting of metal, wood, or hard materials to produce repeatable fits, smooth surfaces, and interchangeable machine parts.
Field sketch of Magneto, highlighting copper wire, mild steel, ignition coil, permanent magnet.

artifact

Magneto

A rotating magnet and coil generator that can supply ignition pulses without depending on a charged storage battery.
Field sketch of Measuring rod, highlighting stable stock, counting, measurement.

measurement

Measuring rod

A stable marked length standard used to transfer dimensions, compare parts, lay out work, and teach repeatable construction.
Field sketch of Mild steel, highlighting iron ore, charcoal, steelmaking, material.

material

Mild steel

Low-carbon steel that is tough, workable, weldable or rivetable, and central to industrial machine and vehicle production.
Field sketch of Milk Casein, highlighting milk casein supply, water, workshop records, material.

material

Milk Casein

Milk Casein is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Moisture Test, highlighting moisture test samples, measuring rod, workshop records, test.

test

Moisture Test

Moisture Test is a practical quality test for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Mortar, highlighting mortar supply, clay, kiln firing test, material.

material

Mortar

Mortar is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Mortar and pestle, highlighting hard bowl and pounder, stone, stone hammer, tool.

tool

Mortar and pestle

A paired crushing and grinding tool for pigments, grog, grain, resin, herbs, and small mineral batches.
Field sketch of Mortise and tenon, highlighting stable wood stock, chisel, try-square, process.

process

Mortise and tenon

An interlocking wood joint where a projecting tenon fits a matching cavity for stronger frames and repeatable structures.
Field sketch of Nail, highlighting nail supply, wire drawing, anvil stone, artifact.

artifact

Nail

Nail is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Needle, highlighting bone, thorn, metal, or hardwood blank, awl, bone and antler, tool.

tool

Needle

A slender piercing and carrying tool for sewing leather, cloth, bark, skins, and bindings.
Field sketch of Net making, highlighting cordage and gauge, knot tying, cordage fiber, process.

process

Net making

The construction of repeated open mesh from cordage for carrying, fishing, drying, trapping, sorting, and storage.
Field sketch of Nettle Fiber, highlighting nettle fiber supply, cordage fiber, spindle, material.

material

Nettle Fiber

Nettle Fiber is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Oak Gall, highlighting oak gall supply, water, workshop records, material.

material

Oak Gall

Oak Gall is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Ochre, highlighting iron-rich earth, water settling test, abrasive grit, material.

material

Ochre

Iron-rich earth pigment selected, washed, and ground for marking, paint, ink color, surface coding, and teaching samples.
Field sketch of Oil refining, highlighting petroleum, clay, distillation, process.

process

Oil refining

A controlled petroleum separation and purification practice, included as a high-level graph node for fuel and lubricant supply chains.
Field sketch of Paper, highlighting plant fiber, clean water, rope, water settling test.

material

Paper

A thin sheet made from interlocked fibers, useful for records, drawings, labels, patterns, teaching, and administrative memory.
Field sketch of Peat, highlighting peat supply, firekeeping, charcoal, material.

material

Peat

Peat is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Peg joint, highlighting peg stock and bored parts, hand drill, woodworking, process.

process

Peg joint

A joint held by shaped pegs through aligned holes, useful for knockdown frames, wheels, handles, and repairs.
Field sketch of Petroleum, highlighting barrel, clay, geological survey, material.

material

Petroleum

Naturally occurring crude oil that becomes a family of fuels, lubricants, waxes, and industrial feedstocks after controlled processing.
Field sketch of Piston and cylinder, highlighting cast iron, mild steel, cylinder boring, machining.

artifact

Piston and cylinder

A close-fitting sliding chamber that converts expanding gas or fluid pressure into controlled reciprocating motion.
Field sketch of Pitch, highlighting resinous material, resin, firekeeping, material.

material

Pitch

A sticky waterproofing and adhesive material made from resinous sources and used to seal, bind, and protect workshop objects.
Field sketch of Plain bearing, highlighting hardwood, animal fat, wheel and axle, woodworking.

artifact

Plain bearing

A low-friction rubbing surface or sleeve that lets a shaft turn or pivot with controlled wear.
Field sketch of Planetary transmission, highlighting mild steel, lubricating oil, transmission, gear cutting.

artifact

Planetary transmission

A compact gear train with sun, planet, and ring gears that can provide multiple speed relationships through clutches or bands.
Field sketch of Plant Dye, highlighting plant dye supply, water, workshop records, material.

material

Plant Dye

Plant Dye is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Plaster, highlighting plaster supply, clay, kiln firing test, material.

material

Plaster

Plaster is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Plastering, highlighting plastering supply, clay, woodworking, process.

process

Plastering

Plastering is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Plow, highlighting plow supply, woodworking, lashing, tool.

tool

Plow

Plow is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Plumb line, highlighting cord and weight, rope, standard weights, tool.

tool

Plumb line

A cord and weight used to find vertical, align posts, check walls, mark centers, and teach gravity-based reference lines.
Field sketch of Pneumatic tire, highlighting vulcanized rubber, textile cord, spoked wheel, artifact.

artifact

Pneumatic tire

An air-filled tire that cushions a wheel, improves traction, and protects a vehicle from road shock.
Field sketch of Poppet valve, highlighting mild steel, lubricating oil, machining, spring making.

artifact

Poppet valve

A stemmed valve that opens against a seat and closes to control intake, exhaust, steam, air, or liquid flow.
Field sketch of Potash, highlighting potash supply, stone, scratch hardness test, material.

material

Potash

Potash is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Potter's wheel, highlighting clay, timber, wheel and axle, tool.

tool

Potter's wheel

A rotating work platform that lets a potter shape clay symmetrically with steady hand pressure.
Field sketch of Proof Load Test, highlighting proof load test samples, measuring rod, workshop records, test.

test

Proof Load Test

Proof Load Test is a practical quality test for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Public safety, highlighting shared rules and enforcement, sanitation norms, workshop records, institution.

institution

Public safety

Shared norms for keeping dangerous, dirty, or confusing work away from bystanders, food, water, children, and public paths.
Field sketch of Pulley, highlighting rope, wood, wheel and axle, tool.

tool

Pulley

A grooved wheel or roller that guides rope, changes force direction, and can combine with other pulleys for lifting advantage.
Field sketch of Quality-control records, highlighting paper, ink, workshop records, writing.

institution

Quality-control records

A recordkeeping practice that connects batches, inspections, defects, repairs, and design changes across a workshop or factory.
Field sketch of Quern, highlighting paired grinding stones, stone, mortar and pestle, tool.

tool

Quern

A hand grinding stone system for grain, pigments, grog, minerals, and other repeatable small-batch grinding.
Field sketch of Radiator, highlighting sheet steel, copper sheet, water-jacket cooling, sheet metal working.

artifact

Radiator

A heat exchanger that moves engine heat from circulating water to air through many thin passages or surfaces.
Field sketch of Rawhide, highlighting rawhide supply, leather, cutting edge, material.

material

Rawhide

Rawhide is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Reed, highlighting reed beds, water, cutting edge, material.

material

Reed

Straight hollow or pithy wetland stems used for mats, thatch, pens, tubes, floats, baskets, and light frames.
Field sketch of Resin, highlighting tree resin, cutting edge, firekeeping, material.

material

Resin

Sticky tree exudate gathered, cleaned, and used for sealants, adhesives, waterproofing, torch fuel, and compound repairs.
Field sketch of Rivet, highlighting rivet supply, wire drawing, anvil stone, artifact.

artifact

Rivet

Rivet is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Road Building, highlighting road building supply, measuring rod, workshop organization, process.

process

Road Building

Road Building is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Rolling mill, highlighting mild steel, lubricating oil, plain bearing, tool.

tool

Rolling mill

A powered mill that passes metal between rolls to make bars, strip, rail, plate, or sheet of repeatable section.
Field sketch of Roof Tile, highlighting roof tile supply, clay, kiln firing test, artifact.

artifact

Roof Tile

Roof Tile is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of rope, highlighting cordage fiber, knot tying, and process handling details.

tool

Rope

Twisted or braided fibers that carry tension for hauling, lifting, tying, measuring, and transmitting force.
Field sketch of Rope making, highlighting plant fiber, tensile test, counting, process.

process

Rope making

The process of preparing fibers and laying them into cord, line, or rope with enough consistency for tying, hauling, and lifting tests.
Field sketch of Rush, highlighting rushes from wet ground, water, cutting edge, material.

material

Rush

Flexible wetland stems used for cord, mats, basketry, wicks, packing, seating, and light tying work.
Field sketch of Salt, highlighting salt supply, water, storage jar, material.

material

Salt

Salt is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Sand, highlighting sand supply, stone, scratch hardness test, material.

material

Sand

Sand is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Sandstone, highlighting sandstone supply, stone, scratch hardness test, material.

material

Sandstone

Sandstone is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Sanitation norms, highlighting clean water, writing, counting, institution.

institution

Sanitation norms

Shared rules for separating waste, drinking water, food handling, washing, burial, drainage, and sickness response.
Field sketch of Saw, highlighting toothed edge material, cutting edge, timber, tool.

tool

Saw

A toothed cutting tool that removes repeated small bites to divide wood, bone, horn, or other workable materials.
Field sketch of Saw pit, highlighting pit, staging, saw, and timber, saw, workshop organization, tool.

tool

Saw pit

A team cutting arrangement that lets long timber be sawn into boards or blanks using gravity, staging, and coordinated labor.
Field sketch of Scraper, highlighting scraper edge, cutting edge, bone and antler, tool.

tool

Scraper

A controlled edge used to remove thin material from hide, wood, bone, clay, and surfaces needing cleanup.
Field sketch of Scratch hardness test, highlighting reference scraps, stone, abrasive grit, test.

test

Scratch hardness test

A comparative test that ranks minerals, edges, and surfaces by which material can scratch another.
Field sketch of Seasonal Calendar, highlighting seasonal calendar reference materials, counting, measuring rod, measurement.

measurement

Seasonal Calendar

Seasonal Calendar is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Seed Selection, highlighting seed selection records and teaching stock, workshop records, seasonal calendar, institution.

institution

Seed Selection

Seed Selection is a practical social practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Service manual, highlighting paper, ink, writing, technical drawing.

knowledge

Service manual

A standardized maintenance document that turns a complex vehicle into a repairable public technology rather than a one-off artifact.
Field sketch of Sheet steel, highlighting mild steel, lubricating oil, rolling mill, material.

material

Sheet steel

Thin, repeatable steel stock used for panels, tanks, brackets, stampings, guards, and early automobile bodywork.
Field sketch of Shell, highlighting sound shell, abrasive grit, cutting edge, material.

material

Shell

Hard marine or freshwater shell used for scraping, inlay, lime feedstock, containers, beads, and small tools.
Field sketch of Shell Lime, highlighting shell lime supply, stone, scratch hardness test, material.

material

Shell Lime

Shell Lime is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Shovel, highlighting shovel supply, woodworking, lashing, tool.

tool

Shovel

Shovel is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Shrinkage test, highlighting marked test piece, clay, measuring rod, test.

test

Shrinkage test

A marked-sample test for observing how clay, hide, fiber, and wood change size during drying or processing.
Field sketch of Shuttle, highlighting smooth wood, bone, or reed, weaving, woodworking, tool.

tool

Shuttle

A hand tool that carries weft thread through a shed, improving speed, order, and thread protection.
Field sketch of Sickle, highlighting sickle supply, woodworking, lashing, tool.

tool

Sickle

Sickle is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Sieve, highlighting woven screen or perforated sheet, basketry, cordage fiber, tool.

tool

Sieve

A perforated or woven separator used to grade grain, sand, grit, grog, fiber, clay inclusions, and other particles.
Field sketch of Sieve grading, highlighting screen set and labeled samples, sieve, water settling test, test.

test

Sieve grading

A particle sorting test that separates grit, grog, grain, sand, and fibers into more repeatable working grades.
Field sketch of Sighting Frame, highlighting sighting frame reference materials, counting, measuring rod, measurement.

measurement

Sighting Frame

Sighting Frame is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Sinew, highlighting animal tendon, cutting edge, tensile test, material.

material

Sinew

Tough animal tendon fiber prepared for binding, sewing, bowing, lashings, and composite repairs.
Field sketch of Sled, highlighting sled supply, woodworking, lashing, artifact.

artifact

Sled

Sled is a practical artifact for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Smoke observation, highlighting watched hearth or kiln, firekeeping, charcoal, test.

test

Smoke observation

A disciplined visual and smell-based observation practice for judging fuel, draft, dampness, and incomplete burning without over-specifying fire settings.
Field sketch of Soap, highlighting soap supply, water, public safety, process.

process

Soap

Soap is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Softwood, highlighting softwood supply, timber, cutting edge, material.

material

Softwood

Softwood is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Soot, highlighting soot supply, firekeeping, charcoal, material.

material

Soot

Soot is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Spark ignition, highlighting copper wire, ceramic insulator, spark plug, ignition coil.

process

Spark ignition

An ignition system that creates a timed electric spark to start combustion in a controlled engine chamber.
Field sketch of Spark plug, highlighting mild steel, copper wire, ceramic insulator, threaded fastener.

artifact

Spark plug

A heat-resistant insulated electrode assembly that delivers a spark inside a gasoline engine cylinder.
Field sketch of Spindle, highlighting straight shaft and whorl, cordage fiber, hand drill, tool.

tool

Spindle

A rotating shaft and optional whorl used to twist fiber into thread or yarn for cordage, weaving, stitching, and bindings.
Field sketch of Spinning, highlighting prepared fiber, spindle, cordage fiber, process.

process

Spinning

The process of drawing and twisting fibers into continuous thread or yarn for weaving, sewing, tying, and records.
Field sketch of Spoked wheel, highlighting timber, hide glue, wheel and axle, woodworking.

artifact

Spoked wheel

A wheel built from hub, spokes, and rim so it can stay large while using less material than a solid disk.
Field sketch of Stamping press, highlighting mild steel, lubricating oil, sheet steel, die making.

tool

Stamping press

A press and die system that shears or forms sheet metal into repeated shapes for brackets, panels, and covers.
Field sketch of Standard weights, highlighting stone, clay, lever, counting.

measurement

Standard weights

Agreed reference masses used to compare materials, loads, trade quantities, tests, and batch records.
Field sketch of Starch Paste, highlighting starch paste supply, water, workshop records, material.

material

Starch Paste

Starch Paste is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Steering gear, highlighting mild steel, lubricating oil, wheel and axle, gear cutting.

artifact

Steering gear

A control linkage and gear set that turns driver input into predictable wheel angle without binding or dangerous looseness.
Field sketch of Stone, highlighting hard stone, water settling test, stone hammer, material.

material

Stone

Hard natural rock selected by fracture, grain, shape, and durability for tools, weights, hearths, grinding, building, and test pieces.
Field sketch of Stone hammer, highlighting hard stone, tool.

tool

Stone hammer

A selected stone used to strike, break, peen, wedge, crush, rough-shape, and test materials before specialized metal hammers exist.
Field sketch of Storage jar, highlighting clay body and closure, clay, kiln firing test, artifact.

artifact

Storage jar

A container for keeping water, grain, pigment, fiber, ash, glue, oil, and labeled workshop samples controlled.
Field sketch of Straightedge, highlighting stable straight stock, measuring rod, timber seasoning, measurement.

measurement

Straightedge

A stable reference edge used to detect bends, guide marks, compare surfaces, and teach straightness.
Field sketch of Tallow, highlighting tallow supply, leather, cutting edge, material.

material

Tallow

Tallow is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Tally Stick, highlighting tally stick reference materials, counting, measuring rod, measurement.

measurement

Tally Stick

Tally Stick is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Tannin Bark, highlighting tannin bark supply, water, workshop records, material.

material

Tannin Bark

Tannin Bark is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Tanning, highlighting tanning supply, water, public safety, process.

process

Tanning

Tanning is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Technical drawing, highlighting paper, ink, writing, counting.

knowledge

Technical drawing

A shared drawing practice for communicating shape, size, parts, assembly, and revisions before or during construction.
Field sketch of Tensile test, highlighting standard weights, lever, test.

test

Tensile test

A controlled pull test for comparing rope, fiber, thread, straps, joints, and other materials that fail in tension.
Field sketch of Thatching, highlighting thatching supply, clay, woodworking, process.

process

Thatching

Thatching is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Threaded fastener, highlighting mild steel, lubricating oil, lathe, standard weights.

artifact

Threaded fastener

A standardized screw, bolt, nut, or stud that joins parts while allowing disassembly and replacement.
Field sketch of Threshing, highlighting threshing supply, basketry, storage jar, process.

process

Threshing

Threshing is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Tile Making, highlighting tile making supply, clay, woodworking, process.

process

Tile Making

Tile Making is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Timber, highlighting trees, cutting edge, material.

material

Timber

Felled and selected wood prepared as a structural material for frames, handles, axles, wheels, benches, jigs, and buildings.
Field sketch of Timber seasoning, highlighting dry storage, timber, counting, process.

process

Timber seasoning

The controlled drying and sorting of timber so wooden parts shrink less, warp less, and hold joints more predictably.
Field sketch of Tin Ore, highlighting tin ore supply, stone, scratch hardness test, material.

material

Tin Ore

Tin Ore is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Tongs, highlighting tongs supply, firekeeping, charcoal, tool.

tool

Tongs

Tongs is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Transmission, highlighting mild steel, band brake, gear cutting, clutch.

artifact

Transmission

A gear and clutch system that adapts engine speed and torque to the driven wheels.
Field sketch of Try-square, highlighting stable stock, measuring rod, cutting edge, tool.

tool

Try-square

A right-angle checking and marking tool used to make frames, boxes, wheels, benches, and drawings more repeatable.
Field sketch of Tuyere, highlighting tuyere supply, firekeeping, charcoal, tool.

tool

Tuyere

Tuyere is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Vinegar, highlighting vinegar supply, water, workshop records, material.

material

Vinegar

Vinegar is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Volume Measure, highlighting volume measure reference materials, counting, measuring rod, measurement.

measurement

Volume Measure

Volume Measure is a practical measurement practice for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Vulcanized rubber, highlighting natural rubber, textile cord, rubber curing, material.

material

Vulcanized rubber

Chemically treated natural rubber that resists heat, cold, tearing, and deformation better than raw rubber.
Field sketch of Water, highlighting containers, material.

material

Water

The workshop supply chain for finding, carrying, settling, storing, and judging usable water for clay, ink, paper, glue, washing, and tests.
Field sketch of Water pump, highlighting mild steel, leather, simple pump, plain bearing.

artifact

Water pump

A mechanical device that moves water through a cooling loop, well, trough, or workshop process.
Field sketch of Water settling test, highlighting clear or open container, water, test.

test

Water settling test

A simple separation and recognition test that uses water and time to compare clay, silt, sand, grit, fiber, and other suspended solids.
Field sketch of Water-jacket cooling, highlighting water, rubber hose, water pump, process.

process

Water-jacket cooling

A circulating water system that carries heat away from engine walls and into a radiator or tank.
Field sketch of Wattle and Daub, highlighting wattle and daub supply, clay, woodworking, process.

process

Wattle and Daub

Wattle and Daub is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Weaving, highlighting thread or yarn, flax fiber, spindle, process.

process

Weaving

The organized interlacing of thread, yarn, fiber, or strips into cloth, straps, screens, bags, belts, and technical fabrics.
Field sketch of wheel and axle, highlighting timber, plain bearing, and hub alignment details.

artifact

Wheel and axle

A rotating round member fixed to a central shaft, useful for carts, pulleys, windlasses, potter's wheels, and later transport systems.
Field sketch of Willow, highlighting willow rods, water, cutting edge, material.

material

Willow

Fast-growing flexible wood and rods used for basketry, hurdles, ties, charcoal feedstock, and light frames.
Field sketch of Winnowing, highlighting winnowing supply, basketry, storage jar, process.

process

Winnowing

Winnowing is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Wire Drawing, highlighting wire drawing supply, firekeeping, charcoal, process.

process

Wire Drawing

Wire Drawing is a practical workshop process for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Wood ash, highlighting clean hardwood ash, firekeeping, water settling test, material.

material

Wood ash

Alkaline mineral residue from clean wood fires used cautiously for cleaning, flux-like experiments, pigment adjustment, and soil or clay trials.
Field sketch of Woodworking, highlighting timber, abrasive grit, technical drawing, tensile test.

process

Woodworking

The practical craft of selecting, shaping, joining, boring, smoothing, and repairing wood for tools, frames, wheels, fixtures, and buildings.
Field sketch of Wool, highlighting sheep fleece or similar fiber, cordage fiber, cutting edge, material.

material

Wool

Crimped animal fiber prepared for spinning, felting, padding, insulation, straps, cloth, and thread.
Field sketch of Wool Yarn, highlighting wool yarn supply, cordage fiber, spindle, material.

material

Wool Yarn

Wool Yarn is a practical supply chain for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.
Field sketch of Workbench, highlighting stable timber and fasteners, woodworking, timber seasoning, tool.

tool

Workbench

A stable raised work surface with stops, holes, pegs, or tiedowns for safer repeatable craft work.
Field sketch of Workshop organization, highlighting people, space, and rules, apprenticeship, workshop records, institution.

institution

Workshop organization

A social technology that assigns roles, space, storage, tool care, safety rules, and quality checks inside a productive workshop.
Field sketch of Workshop records, highlighting record medium, writing, counting, institution.

institution

Workshop records

A recordkeeping practice for batches, sources, tests, tools, dimensions, failures, and trusted procedures.
Field sketch of Writing, highlighting writing surface, counting, knowledge.

knowledge

Writing

A durable symbol system and teaching practice for records, labels, instructions, measurements, and plans.
Field sketch of Yoke, highlighting yoke supply, woodworking, lashing, tool.

tool

Yoke

Yoke is a practical tool for expanding the static technology tree with local sourcing, repeatable preparation, and visible quality checks.