On Sunday 16 July 2017 12:38:46 jeremy youngs wrote: > A piece of cardboard box with a hole in the middle does a treat for > keeping chips out of the steady rest > Hummm, now why the heck didn't I think of that?
And after getting the mandrel to fit, I went out and bought some 1/4" SAE bolts to use for locking setscrews. Just one problem. I was gonna grind a flat on the end of the mandrel and run a guard screw in to lock it to the mandrel, but neither screws threads are long enough, and to top that, the guard screws are 30 tpi! As us 'mericans know, we have 2 common threads for 1/4" bolts. Coarse, USS, is 20 tpi, and SAE, fine, is 28 tpi. Need a 30? Make the SOB. I can, but first I have to dry the tears so I can see what the heck TLM is doing. Sometimes it really isn't worth the effort to get up, pee and make coffee in the mornings... Grrrrrr. But, go see if I have a suitable grade 8 or better, with a long enough unthreaded shank to sacrifice. > On Jul 16, 2017 10:29 AM, "Gene Heskett" <[email protected]> wrote: > > On Sunday 16 July 2017 10:55:53 John Kasunich wrote: > > > On Sun, Jul 16, 2017, at 02:51 AM, Gene Heskett wrote: > > > (snip) > > > > > > > Some of this I should be > > > > doing between centers, driving the workpiece with a dog, but I > > > > don't have a 5C to MT2 adaptor. I might see if I can find one > > > > tomorrow. My bed is calling me now. > > > > > > If you are referring to the headstock end, you don't need an > > > adapter. Just chuck a piece of scrap steel in your 3-jaw and turn > > > a 60 degree point on it. Doesn't matter how bad the 3-jaw is. If > > > you turn the point in place and don't remove it until you are done > > > with the job it WILL be centered. > > > > If I turn the jaws around on this chuck, that might let a dog engage > > a jaw to drive the mandrel I'm making, which in turn is holding the > > workpiece. That might be just what Dr. Gene needs. > > > > Thanks for the idea, John. > > > > > For the next job, stick it back in the chuck and just take enough > > > of a skim cut to make sure it is centered again. > > > > That would work well too. > > > > 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 > > ---------------------------------------------------------------------- >-------- 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 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
