What about torch heating the end and hot forging with the (cold) driver of your choice?
Perhaps start with a full depth pilot hole so the forging tool doesn't have to displace as much material. You could then quench and temper to preference. Jason On Jul 21, 2012 9:32 PM, "Gene Heskett" <ghesk...@wdtv.com> wrote: > On Saturday 21 July 2012 22:14:28 Gene Heskett did opine: > > > On Saturday 21 July 2012 12:55:27 andy pugh did opine: > > > On 21 July 2012 16:44, Gene Heskett <ghesk...@wdtv.com> wrote: > > > > And I just now did hit a page with some size specs. Looks like T15 > > > > is as big as I can shoot for. The thru hole in the extension is a > > > > good fit for a 3.5 mm allen wrench. > > > > > > Broach it hex then, it can't be _that_ hard. > > > Just don't do your real part first. > > > > A given. I'll cut off half an inch of this drill rod and try that 2nd. > > First will be a piece of hard plastic like micarta. > > > > Cheers, Gene > > I got it done, not once but twice, second time in the real screw. Then I > did a boo-boo after making a 7mm tapped pocket to hold the screw, I mounted > the drill bit, dropping its diameter about 6 thou, and thinking in mm that > I needed to drill maybe 7mm into the end of it, zeroed the z without > checking to see if it really was, fed the bit in, glance at the dro > occasionally but always seeing it as -2.something, so I kept on boring. > > When I realized the display was in inches and that there must have been a > previous touch off in effect. The net effect is that I bored to far and > broke the screw at the size change. > > That made it beer thirty & I was one behind. My biggest problem was that > 3.5mm wrench, is damned near made out of unobtainium, I check Advance Auto, > TSC and finally found 2 pocket kits at Lowes with a 3.5mm. That turned out > to be damned hard stuff, and my lathe drove it in 4 to 5mm very easily with > about a 1/8" tail stock offset. Veddy tight though, took a pair of BIG > vice grips and a hammer to remove the key piece both times. Without > resorting to driving it back in with a hammer, it only goes back in about > 1mm. > > So, I guess tomorrow I re-rig and sharpen my thread cutter, and make > another screw. Then its probably going to slow for a day or 3 because I > have no clue how much nose I'll come home with Monday. Squamus Cell they > called them this time. Several small ones. > > 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) > My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! > Minimum charge for booths. > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
