Why every shop has a different name for the same tool
Trade language is local. The same object can carry four names inside a single county, and each one tells you something about where the worker learned...
24 July 2026 · 6 min readThe dictionary for the shop floor
Thousands of terms from across the trades: the supplies and equipment you order, the processes you run, and the words people actually use when they are talking about them.
Word of the Day
9 November 2026
quenching
nounMetallurgy
The rapid cooling of a hot metal object, by placing it in a liquid, in order to harden it.
Rapid cooling to lock in a structure that slow cooling would never produce. The whole of heat treatment is an argument about cooling rate.
Features
All featuresAccuracy, precision, and the words metrology keeps getting wrong
The two are not synonyms, and treating them as one is how a measurement process passes calibration while producing consistently wrong parts.
21 July 2026 · 5 min readHot top, sprue and riser: the vocabulary of a casting
Most of the metal poured into a mould is never part of the finished part. The words for the sacrificial bits explain how casting actually works.
17 July 2026 · 7 min readWhat nominal really means, and why pipe sizes lie
A two inch pipe is not two inches anywhere. Nominal sizing is a historical artefact that every trade has quietly agreed to keep.
14 July 2026 · 5 min readBrowse by trade
All 35 tradesElectrical engineering651 termsAutomotive603 termsMining and extraction591 termsIndustrial electronics590 termsManufacturing515 termsRail equipment498 termsAviation maintenance479 termsIndustrial supplies, equipment, and components401 termsAgricultural equipment398 termsIndustrial printing388 termsConstruction369 termsTextile production272 terms
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Full A to ZCrossovers
All 555 crossoversOrdinary words that mean something else entirely on a shop floor.
Gimp: wrapping yarn, not trimming cloth
In textiles, to gimp is to spiral-wrap yarn with thread or wire, a structural technique far removed from the decorative trim of...
Textile productionPuddling: From dessert dish to steel furnace
To most people, puddling means stirring a sweet custard. In metallurgy, it meant stirring molten iron to turn it into steel.
MetallurgyUngreen: When Blue Needs Air to Become Blue
To most people, ungreen means removing environmental consciousness. In the indigo vat, it means something far more precise...
ManufacturingDownshift: Gears versus Life
On the road, downshift means dropping to a lower gear. In life, it means stepping back from ambition or pace.
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All gamesMore reading
Backlash, runout and the words for motion that should not be there
Every machine has movement it was not designed to have. The trades have separate names for each kind, and the name tells you where to look.
10 July 2026 · 6 min readHow hydraulic accumulators store a second of emergency
An accumulator is a battery for pressure. It smooths demand, absorbs shock, and keeps a machine controllable when the pump stops.
7 July 2026 · 6 min readTakt time is not cycle time
Two numbers that sound interchangeable and mean opposite things. One is set by the customer, the other by your process.
3 July 2026 · 5 min readThe strange names of locomotive wheel arrangements
1Co-Co1 and A1A-A1A look like serial numbers. They are compact engineering drawings, and once you can read them they are obvious.
29 June 2026 · 6 min readGet the Word of the Day
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