On Thursday 13 August 2015 18:14:27 Gene Heskett wrote: Update
> On Thursday 13 August 2015 13:56:34 andy pugh wrote: > > On 13 August 2015 at 18:51, Gene Heskett <ghesk...@wdtv.com> wrote: > > > And I just found that I will be driving any taps I use by chucking > > > them in a drill chuck. I checked 3 different taps, and exactly > > > none of them is an even fractional OR metric size. The squares > > > aren't even square by as much as 15 thou! Sheesh. The 0-80 tap > > > shank is .141" in diameter for instance. Way to big for an 1/8" > > > collet and way, way to sloppy for a 3/16 to even think about > > > clamping down on it. A 4mm tap has a 3.56mm shank. Which of > > > course also fits in exactly zero of a 14 pack of R8 collets in > > > fractional inchs sizes. > > > > Get a _metric_ set of ER collets. Then you can grip anything. > > > > (I have heard, but not seen proved, that there are ungrippable gaps > > in the imperial ER collet ranges) > > Fleabay, $153 & change, 2 R8-ER32 adaptors, and a 2 to 20mm set of > collets. Over a 20 dollar bill for shipping on the adaptors, ouch. > Thinking about it. Its not something I need instantly, and the big drill chuck supplied with the mill can go down to 3mm & I think up to 3/4". Its a horse of a chuck, so I may give it a try. > > In the meantime, the 2nd pair of 1Gb memory modules walked up and rang > the doorbell just before we went to have dinner, so now they are in > the machine and memtest86+ is sniffing at them... > They made it thru about 1.5 passes of memtest w/o any errors, so I rebooted and played about in the bios, and it appears the ps2 keyboard is now functioning at the grub prompt. The machine feels better with the faster ram, responding to very small fractions of a second move commands. I tried to convert my blanket-chest carving code to do all the changes for the various boards in just a couple variables at the top of the file, but as usual I now have it screwed up, some math error someplace. The initial scan plot, and the running backplot disagree, and its too small to be a tool_rad added instead of subtracted type error. Plus it is supposed to carve either 5 fingers, or 5 sockets for the mating fingers, but is doing 4.5. Fingers too wide in either event. Since I did some other work building a clamp kit and collet holder & getting that mounted for handy usage, I'll tackle the software error when I am fresher in the morning. In making a rack for the R8 stuff, I didn't space the holes far enough apart by about a millimeter. I'll make another someday when I get tired of pinching my fingers. :) [...] 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> ------------------------------------------------------------------------------ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
