On Wednesday 23 April 2014 18:05:33 andy pugh did opine: > On 23 April 2014 22:17, Gene Heskett <ghesk...@wdtv.com> wrote: > > 1. Since the tool post may get turned a few degrees to facilitate a > > boring operation, how do you go about ascertaining that the tool post > > is truly square so you don't have to re-invent a new tool table when > > its been turned or moved? > > I never turn the tool post. So far I have never needed to. > One particular part that I make a fresh one of from time to time, is the black powder nipple that instead of holding the usual #11 percussion cap, holds a #209M shotgun primer, which is nearly the only method of reliably igniting a black powder substitute called BlackHorn 209. Its the difference between a 8" 5 shot group at 50 yards, and a 1.5" group at 50 yards.
It has several other advantages, like firing 30 shots in an afternoon at the range, without even needing a spit patch cleaning. That needs a pocket in the back of it to hold this primer, nominally .242" in diameter, and around .230 to .235 deep. I haven't found a drill that size which can give a reasonably flat bottom, so most of the time I drill a 3/16" hole about the right depth, then mount an .125" solid carbide 2 flute mill in a drill chuck, which in turn is set into the boring bar holder, and turn the post just enough that the near corner of the mill functions as a boring bar, say 5 degrees CCW from square when looking down on it. There is of course a small slop in the tool post hold down bolt, so restoring it to a fixed position can be a chore. > > 2. Do you use fixed gages when servicing the tools in order to > > establish a fixed "stickout" for that tool when re-installing it in > > the QC holder? > > I have a holder for (nearly) every tool. When I need to swap tools I > touch-off again. > > Tool table entries correspond to the holders, not the tool, in my case > (and I have stamped them). Here, except for the boring bar and cutoff holders, they are, AFAIK all alike & carry the same part number. But I also need to get another bar holder and 4 or 6 more std tool holders to complete the kit and get most of my tools mounted. If I were to stamp them, it would be with the tooltable entry to use. Are there arguments against that? Thanks Andy. Cheers, Gene -- "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> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Start Your Social Network Today - Download eXo Platform Build your Enterprise Intranet with eXo Platform Software Java Based Open Source Intranet - Social, Extensible, Cloud Ready Get Started Now And Turn Your Intranet Into A Collaboration Platform http://p.sf.net/sfu/ExoPlatform _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
