Mandrel /(?)/

Man·drel

Mandrel

n.
  1. A bar of metal inserted in the work to shape it, or to hold it, as in a lathe, during the process of manufacture; an arbor. (Mach.)

Phrases & Compounds
Mandrel lathe
a lathe with a stout spindle, adapted esp. for chucking, as for forming hollow articles by turning or spinning.