On Saturday 09 September 2017 02:46:37 Erik Christiansen wrote: > On 08.09.17 15:32, John Kasunich wrote: > > Part of the problem is almost certainly the difference between > > unloaded moves and loaded (cutting) moves. Tools flex, toolposts > > flex, machine flexes, etc. > > +1. > > Please don't laugh, but I once made a boring bar out of a file, 'cos > it was the weekend, and I didn't have anything small enough. Yes it > cut, but you couldn't do enough spring passes to get it to cut to the > depth wound on the crossfeed dial. So I drilled a square bit of bar, > and slotted it to hold a small end mill so its corner could serve as a > boring tooth. Problem gone. > > That's the one problem with insert tooling. Any inserts I have won't > go in a small bore. > > As in Gene's case, I had remarkably high lag in cutting depth, before > it was remedied. > > Erik > I am gradually learning how to grind HSS tooling, which is usually sharper than a fresh carbide tool insert. That generally negates a spring pass need after the 2nd one.
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
