On 10.05.18 19:02, Gene Heskett wrote: > Anyway, I've made a box that can corral 100 of the "tap hats", all of > which now have a 4mm cap screw in the side, whose head matches the slot > I cut in the lip of the 7/8" R8's. So that problem is partially > addressed.
That's one R8 collet for each size range of tap hats, I figure. (Horizontal hold on the picture is a bit unsteady down here.) > Thinking on finding the right sized drill for the axial thru-hole of the > tap hat, and not yet investing in a quality (if such a beast exists > today) set of letter drills, the thought comes to mind of EDM'ing 1 > lengthwise slot all the way to the bore, and 2 more about 25 thou short > of the bore so I could use the collets compression to close the gap and > arrive at a more accurately centered tap, with no rattle room left. I > like the idea, but not the time involved since those 3 slots will eat a > days work per "hat" made. Skip that idea. But sleep on it. What's the thinnest small slitting saw you can lay your hands on? Mebbe something ex-dremel? It only needs to be big enough to slice through the hide of a tap hat. But, whoa. I'm also not fully across the need for bore adjustment. As taps are ground from a few stock sizes, only those few sizes of tap hat bore are needed. While I found a drill close enough for one size, and bored the other, if I had to make a bunch of the latter, I'd probably make up a D-bit reamer, and keep it with the tap hat kit. > Go stuff a weeks worth of pills into my pill-tainer, and maybe something > will come to mind. Here it's carting firewood for the winter closing in; 200 armloads stacked up under the eaves, now that the fire danger of a desperately dry autumn has been replaced by rain and sleet. (Prayers to Thor answered.) Erik ------------------------------------------------------------------------------ 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
