Abstract: A manufacture of uniformly sized doors for the compartments of safe deposit box nests comprises punching the lock nose holes in uniformly oversized door blanks and then using those holes as the reference from which the various operations on the edges and rear faces of the blanks are performed. For the latter purposes the blanks are supported in a vertical position upon special moving workholders which engage and position the blanks by means of reciprocating draw bars which extend through the nose holes. In cooperation with other apparatus, the draw bars releasably clamp the blanks in position while various machine operations are serially performed on the blanks as the workholders pause at successive tool stations.