On Thursday 29 June 2017 12:22:21 andy pugh wrote: > On 29 June 2017 at 17:09, Gene Heskett <[email protected]> wrote: > > Greetings all; > > > > I am having a vibration when cutting a harder steel, (old worn mine > > shafting stuff, rusty surface too) seems to be fairly fixed in > > frequency to somewhere in the octave below middle C. > > Can you kill it by oscillating the spindle speed over-ride?
yes, momentarily Andy, but it right back as soon as the speed steadies, at rpms from 50 to 600. And the oscillation frequency is quite constant over that range. Feeling the spinning workpiece, its much stronger there, than anyplace else. But, while I was out and 40 miles down the interstate, to a D.M.V. office taking care of fresh handicapped hanger tags for the rear view mirrors, and a 2 year license sticker for the Toy Rav-4, I stumbled over a locally owned Ace HDWE dealer, and found 1 only 1.25" mounted stone I can put in the die grinders chuck, and maybe I can cobble up some code to make this 30" barrel lose a bit of weight. A pound would be a lot, hauling it around in the deer woods. I'd settle for half a pound even. Even that is still a pound more than it weighs now. If this grinding wheel works and leaves a usable finish on the SS, that negates the need to make an arbor. For a small time at least. Thanks Andy. 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
