You'll need a funny stud since most drill chucks are 3/8-inch NF and most small T-nuts are 3/8-inch NC.
> -----Original Message----- > From: Gene Heskett [mailto:[email protected]] > Sent: Friday, May 11, 2018 9:17 AM > To: [email protected] > Subject: Re: [Emc-users] Tap Hats [Was: Re: More on er-20 stuffs > > On Friday 11 May 2018 08:42:58 Erik Christiansen wrote: > > > On 11.05.18 07:42, Gene Heskett wrote: > > > On Friday 11 May 2018 03:32:39 Erik Christiansen wrote: > > > A box or three of grubscrews off fleabay won't add up > > > > > > > to much cost. The last boxful I bought was M3 to M10, IIRC. You > > > > might do better buying plastic bags of each size, for quantity. > > > > > > Thats what I'm going to do, something with a bit of length so an > > > allen or bristol wrench has a decent chance of driving it well. I > > > just need to get off my duff and get a few boxes ordered. 100 count > > > boxes. > > > > Errrr, vertical hold is slipping now. AIUI, you're putting the tap hat > > into an R8 collet, so the grubscrews can't be longer than the wall of > > the tap hat. Mebbe that just means you're going for a significantly > > bigger collet to give room for the longer grubscrews. I think I have > > picture lock again. I'll have to do that too when I get the bigger > > sizes done. > > I made all the brass things from 6' of 7/8" brass rod stock. put a 4mm cap > screw in the side with about 2mm of the cap sticking out, slides into a cut > about 7mm wide and 9mm deep I made in 3 of the korean R8-7/8 collets. The > whole thing when inserted into the R8, sits with the bottom nominally flush > with the bottom of the R8. So I'm not using up the vertical clearance with > excessive z length. So the brass plug is locked to the spindle, at least till the > 4mm cap shears off. Next is to drill the brass and install the grubscrews. I > figure on doing the thru drilling while they are mounted in the spindle, with a > drill bit in a drill chuck, but the chuck locked into a table groove and the xy > drive set so it center drills the brass. Thats picky as visibility is poor, but once > thats located, it should be findable again. The chuck has a 3/8" thread, so a > short stud in a t-nut should hold it fixed on the table. > > > ... > > > > > I'm not that high either, 1000-1100' maybe. The "mountain" our old > > > ntsc transmitter is on since 1955 or so, is called Fisher Hill, 1620 > > > feet at the base of a 509' tower and antenna. Costs more to take it > > > down than its worth as salvage, so they are keeping the lights on. > > > I'm the light watcher/failure reporter as I can see it from my > > > place. :) > > > > Sounds like Entropy is the feller who'll bring it down. (Doesn't > > charge much, but leaves ya with the clean-up.) Seems like you're out > > of range when it happens. That's kinda handy. > > > > 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 > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > -- > 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 > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
