Lathe
A machine that rotates a piece of work rapdidly around 1 axis. Cutting or deforming tools are applied to the object as it spins, producing a shape that is symmetrical about the spinning axis.
Liver of Sulphur
Supplied in dried lump form, Liver of Sulphur is dilluted in hot water to produce a dark patina on alloys containing copper such as Sterling silver.
