On 13 August 2015 at 18:51, Gene Heskett <ghesk...@wdtv.com> wrote: > And I just found that I will be driving any taps I use by chucking them > in a drill chuck. I checked 3 different taps, and exactly none of them > is an even fractional OR metric size. The squares aren't even square by > as much as 15 thou! Sheesh. The 0-80 tap shank is .141" in diameter > for instance. Way to big for an 1/8" collet and way, way to sloppy for a > 3/16 to even think about clamping down on it. A 4mm tap has a 3.56mm > shank. Which of course also fits in exactly zero of a 14 pack of R8 > collets in fractional inchs sizes.
Get a _metric_ set of ER collets. Then you can grip anything. (I have heard, but not seen proved, that there are ungrippable gaps in the imperial ER collet ranges) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
