Metalworking

80 entries in this trade.

scribing block

A device for scribing (marking) lines at a specific height from the base of an object, prior to machining.

shank

A large ladle for molten metal, fitted with long bars for handling it.

shot sample

A sample taken for assay from a molten metallic mass by pouring a portion into water to granulate it.

single curve

A three-dimensional shape into which a thin flat sheet of material, e.g. metal, can be formed by bending alone, without stretching or compression.

skiving

A type of machining that skives metal, with various applications including gear cutting.

slicker

A curved tool for smoothing the surfaces of a mould after the withdrawal of the pattern.

spark test

To test for the general character of a steel, when testing a piece of steel, by grinding it, producing sparks, and using the color of the sparks to determine its general classification.

spray

A side channel or branch of the runner of a flask, made to distribute the metal to all parts of the mold.

stalk

An iron bar with projections inserted in a core to strengthen it; a core arbor.

stop off

To fill (a part of a mould) with sand, where a part of the cavity left by the pattern is not wanted for the casting.

swage block

A perforated iron block with grooved sides and variously-sized holes in its face, used to hold in hot metal bars while swaging large objects.

upset

To thicken and shorten a soft or heated piece of metal, by forging or hammering on the end, to shape, for example, rivets or internal combustion engine valves.

well

The lower part of a furnace, into which the metal falls.