Lathes, or turning machines, are also controlled with computers.  Like mills, they rapidly produce high tolerance machined parts at high rates of production.  These machines efficiently remove material to produce cylindrical parts.  The most commonly recognized examples are nuts and bolts.  Cams, bars, and other types of parts are most efficiently manufactured with a turning center.

On many precision parts it is common to use both milling and turning machines to efficiently create the desired geometry.