From: Robert Bastow <email@example.com>
Subject: Re: 5C collet gripping range
Date: Sat, 09 Oct 1999 17:15:21 GMT
He knows more about collets than you give him credit for.
Best accuracy is + zero to - .002"
Above + five thou will damage the work, below .010" will damage the collet.
1/32 is vandalism!
"David R. Birch" wrote:
> What is the allowable gripping range of a 5C collet that
> doesn't risk springing the collet? I worked for a former
> Hardinge salesman who thought he was an engineer who thought
> he was a machinist who thought he was a CNC programmer.
> This guy claimed that 5C collets only had a range of +.005",
> but he had been selling them and claiming a narrow range
> meant more collets sold. The way he ran his company
> suggested he had little knowledge of or talent for
> manufacturing or machining.
> So what increments are best? 1/64? 1/32?