A mandrel (/ˈmændrɪl/; also mandril or arbor) is one of the following: * a round object against which material can be forged or shaped; or * a flanged or tapered or threaded bar that grips a workpiece to be machined in a lathe. A flanged mandrel is a parallel bar of a specific diameter with an integral flange towards one end, and threaded at the opposite end. Work is gripped between the flange and a nut on the thread. A tapered mandrel (often called a plain mandrel) has a taper of approximately 0.005 inches per foot and is designed to hold work by being driven into an accurate hole on the work, gripping the work by friction. A threaded mandrel may have a male or female thread, and work which has an identical thread is screwed onto the mandrel.Iron frame with handle. Vice section for attaching to bench. Mandrel for shapingmachine wheel, mandrel, forged, shaped, holds workpiece