Got a collet block? Clamping the screw with a collet, and maybe a piece of 800 grit emory paper, is the first thing that comes to mind.
N. Christopher Perry > On Jun 26, 2015, at 5:39 PM, Gene Heskett <[email protected]> wrote: > > Greetings all; > > I've had a heck of a time putting the Z screw, some of which may be my > own fault, and some David Clement's, who sold me the screws on ebay and > vanished. Sorta. I found a message where there were instructions to dl > the instructions, but they are behind a login that he didn't supply a > username or passwd for, and his phone number is "suddenly" out of > service. > > Then 1-411 can't find a David Clements at 6330 N 15th St, Phoenix, AZ > 85014. From the USPS Postage Paid label I saved. > > Short of snail mail, I am locked out of a way to contact him. > > Any way, the nut is big enough that it cannot be inserted into the post > and then turned to face the correct direction to connect it with the Z > slider. So I used the same plastic sleeve to hold the balls that one > must use when installing the Y screw. But while that works for > horizontal positioning, it is NOT large enough to keep the balls within > the normal trackage in the nut, allowing then to run down and against > the teflon seal, so when I screwed the bolt back in, those caught below > the recycle guides, those little red plugs, went on down and forced the > teflon seal about half out of the recess, and wound up dropping about a > dozen balls into the post. Those I have corraled with a retriever > magnet, all of which went on thru a 2" square hole in the bottom of the > post, some on the chip tray, but more scattered about on the floor under > and behind the stand. So now I have 2 problems, one being a pile of > magnetised balls, which will NOT do, and the nut is one way, can only be > turned to climb up the screw toward the top cover and thrust bearing. > > So, next is to back off & remove the adjuster nut at the top of the > bearing so that the screw can be partially unscrewed, thread end below > the top recycle guide, so that the balls can be re-introduced to the nut > below the recycle guide. At least I think thats how it should work. > > I think now the loose bolts holding the nut to the nut carrier may have > been a clue, because there is room, even with the grease zerk on the > rear of the nut installed, to slip the nut bracket into position and > fasten it to the slider, then bring it to the top of its travel & lock > it down, then insert the nut AND screw, assembled from the top, and > using long allen wrenches, put the bolts back in. A right Pain in the > Ass but doable. If I restart 2 opposing bolts with one of those spring > clip retriever thingies, then the bolts to the slider can be removed, > and it all pulled back to the top of the slot where wrench access to the > bolts from the top would be considerably less of a problem. > > Unforch, I now have the far end of the screw in a 5" vice, with about > 5/16" of hard white maple as jaw pads, and the vice "snugged" up enough > to crush the maple to the bottom of the ball grooves. And I still > cannot move that locking nut. Its turning in the maple in the vice. > > So I assume it has some sort of thread-locker juice in it, but the color > doesn't ident it to me. Faint, very faint, line of blue, maybe. > > So now I'll have to figure out a way to heat it hot enough to release > that. I can find about 750F with my hot air rework station but with the > mass of that screw, being in good contact with the thrust bearings, and > them with several ounces of 1/2" alu, it will take quite a while, and > maybe even a box to contain the heat well enough. > > Anybody got a better idea how to grab the screw, without damaging it, > than what I've just described? Because of the steam in a propane flame, > I'd druther use the rework wands dry heat. > > Or maybe a line of superglue at the maple/steel junction? But that stuff > is hell to completely remove once set. > > 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> > > ------------------------------------------------------------------------------ > Monitor 25 network devices or servers for free with OpManager! > OpManager is web-based network management software that monitors > network devices and physical & virtual servers, alerts via email & sms > for fault. Monitor 25 devices for free with no restriction. Download now > http://ad.doubleclick.net/ddm/clk/292181274;119417398;o > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Monitor 25 network devices or servers for free with OpManager! OpManager is web-based network management software that monitors network devices and physical & virtual servers, alerts via email & sms for fault. Monitor 25 devices for free with no restriction. Download now http://ad.doubleclick.net/ddm/clk/292181274;119417398;o _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
