The most common fit found in the machine shop is that of a shaft in a hole.
en.wikipedia.org In a machine shop it also carries away excess heat and depending on composition, may prevent unintentional tearing and welding of the metal.
en.wikipedia.org The historic district also includes various utility buildings including a mess hall, meat house, transformer building, comfort station (later converted to a sign shop), warehouse, and machine shop.
en.wikipedia.org The machine shop was 900ft m in length and included a blacksmiths' shop with 40 furnaces, anvils and steam hammers, a coppersmiths' shop, and fabrication, woodwork and pattern shops.
en.wikipedia.org By 1859, when the town's population was 1,723, industries included a foundry and machine shop, two gristmills, three sawmills, a paper mill and whetstone factory.
en.wikipedia.org