On Saturday 04 July 2020 16:43:12 Jon Elson wrote: > On 07/04/2020 12:54 PM, andy pugh wrote: > > On Sat, 4 Jul 2020 at 18:02, Gene Heskett <ghesk...@shentel.net> wrote: > >> Attacking HSS with diamond is a waste of time and burns up the > >> expen$ive diamond. > > > > Whilst it is meant to be a terrible idea, in practice it works OK. > > I think it depends on surface speed. If the speed is high > enough that the sparks are totally white-hot, it will alloy > with the diamond. At lower speeds, especially where the > sparks are barely glowing, it doesn't seem to hurt the > diamond at all.
IIRC no sparks, 200 or so revs, could just barely hear it touching, peeled two strips down to the alu about 1/4" wide. Not at all impressed. Up to that point, I was watching a very thin cloud of steel dust drifting away in the work light and figured it would get to where it should be in about half an hour. I wound up doing it on the bench grinder with a glass of water to keep from burning my fingers. > Jon > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
