Collet Holding Block
Collet Holding - Quick Change Tool Post (QCTP) The Collet Spindle. The spindle is made from 5/8" mild steel (type 1018). It was faced and center drilled using the steady rest. The rod was turned down to 15.5mm and then reversed in the chuck. The rod was turned down to 1/2" for a length of 40mm. Since a provision for rough indexing or rotational ...