On Wednesday 07 March 2018 02:00:46 Erik Christiansen wrote: > Hi Gene, > > Here's a posed pic with die holder removed for clarity, showing the > Tap Hat aligned vertically by a centre drill. (Imagine that the chuck > is still over a hole just drilled in a clamped-down workpiece, with > the drill bit swapped for the centre drill for the next hole in a > sequence, since it's more rigid and convenient than the longer drill.) > You'll need to zoom in a bit to see the detail. > > To go in a collet, you wouldn't need the fat splined adapter to take > the die holder. I can take this one off as it's only held on with > grubscrews. Two of the four tap-gripping grubscrew holes can be seen > half way up the tap holder body. > And you intended to make one for every tap size you commonly use?
> It may be that in addition to using the largest diameter for which you > have a collet, using brass might increase grip, as the steel collet > can impress its micro-roughness on the brass, even if only as elastic > deformation, rather than slipping on a harder steel surface. (Pure > theoretical mental-coggery, but perhaps worth the experiment.) Note in that regard already made, just haven't verified it yet. > Best of luck in avoiding expensive solutions. > > Erik Looks interesting, and doable. Thanks Erik. -- 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
