Workstead
Silver Member
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When chucking a bit, progressively tighten in ALL THREE HOLES, going from hole to hole, tightening a little more each time.
Doing thus, your bits will be held tighter and the chuck will last much longer.![]()
Hey Bearkiller,
I'm not a machinist by a long shot and an old timer told me once that by tightening a 3 jaw chuck in all 3 holes it helps to center the bit and make it more accurate, especially on a lathe. That's why he always used a 4 jaw chuck.
Clem