On Thursday 10 August 2017 14:40:35 andy pugh wrote: > On 10 August 2017 at 04:41, Gene Heskett <ghesk...@shentel.net> wrote: > > Anybody else have a better idea short of making yet another new > > cathead out of a considerably thicker walled pipe? > > Use a much shorter cathead and poke the barrel down the spindle so > that you don't need a steady.
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Then I'd have to fight with this tap to zero chuck after loosening the mounting bolts. What I did was run the lead of the reamer in till the end of the neck cutter was just touching. Then, because any damage there will be cut away by the reamer, I ran a dead center into it with 20 lbs or so push after slathering the center with some very old, black but says lithium on the gun tube, chassis grease. Moved the steady out of the way and made an inch of it round again. Worked a treat and I shaved around 9 thou off a section where the steady shoe were going to ride, leaving a near mirror finish but with the dull cutter evidence in the subsurface scratches, which did a nice job of keeping the grease in place. Steady heating less than 10F. Sweet turning now with maybe 5 lbs of pressure. Then of course linuxcnc quit working (it only good for 2, sometimes 3 days uptime on the pi, where the pi is at 15 days uptime right now), so I had to tear the whole setup down in order to rehome it after a restart, not of the pi, but LCNC. Once that was done, and the touchoffs were done again, the rest of it was a matter of adjusting this and that, smoking it and test fitting to see where I needed to cut another thou. So thats done and the threads filled with this same black grease to forestall any tendencies to have the stainless gall and freeze it into the action forever. Next is the feed cone in the back face, which has to be very well polished. Thats tommorrow, I'm beat. It's a 45 degree cone, max o.d. 1.000". Progress, I think. :) 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
