On Thursday 10 May 2018 08:02:57 andy pugh wrote: > On 10 May 2018 at 12:22, Gene Heskett <ghesk...@shentel.net> wrote: > > This would, if a 3/4" R8 collet could be found with a D shaped bore, > > be yet another way to remove one potential slip point in trying to > > hold a tap for rigid tapping. > > Buy a small-bore R8 collet and have it wire spark-eroded to a D-shape, > perhaps? > > (You could consider plunge-eroding it yourself, I suppose)
Shirley, you jest. ;-) Yes, I could do it, but how would one go about maintaining the concentricity in a home shop environment? Sounds fairly impossible to me. With what I have for a psu, and the lack of suitable pumping to keep the fluid clean enough to work well, it would take quite some time to remove that much metal from 300 degrees of a bore. On that, unless we can tie the feed into the achieved spark rate, and profile the electrode movement to compensate for electrode wear... lots of ellipses there, not to mention days of runtime. I think I'll pass. -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
