Sherline 2100 WW 3/4 Inch Collet Pot Chuck
These collets can be easily machined and are especially designed to hold larger and odd shaped parts. A 1/8″ (3.17mm) dowel pin is included with the collet to close on while the face is being machined. The face is drilled 3/16″ deep or less and then bored to exact size to make what is, in effect, a custom chuck for parts too big to be held in regular WW collets. They are used with WW collet adapter and drawbar (P/N 1161).
NOTE: Collet pot chucks are designed to hold material only on the face end, not through the collet. Maximum gripping depth is 3/16″ (4.8mm).
Sherline also makes a WW collet with a 1″ blank that is deeper than the pot chucks and is not split. It can also be modified to hold tools or parts for special tasks. See P/N 2083.