On Tuesday 27 May 2014 00:56:17 Greg Bernard did opine And Gene did reply: > Do you have a decent hobby shop near you, Gene? They usually stock a > pretty good selection of tiny screws as well as other useful bits.
There is one, "Hobby Stop" in Bridgeport, and I intend to hit them as the first 2 choices if I make the trip. It has occurred to me that while I have 3 of these ball screws, the third one is not going in, at least in this project, so I can borrow a screw from it & baggie the rest of that nut for later use. Getting slow in my dotage I guess, I didn't think of that ready made spare until after I had posted. That plus I made up my mind to lose some lard this spring, and saw 156.6 lbs on the scales this morning. Reducing the load on my worn out, used up back, it was carrying 205 12 years ago when I retired. Way too wide for my height. 5'8" 60 years ago, 5'2.5" now. I figure something around 140-145 ought to look good in the hallway mirror. But the "Hobby Stop" was on my list & will be at some point. My selection of telescoping brass tubing is getting poor & needs replenished. And it looks as if I should also pick up some solid brass rod of similar size in case I have to make one. But replacing the Z screw in this POS with one of those 13"ers depends on if I have enough down travel from where the nut holder is welded to the post extension, the existing screw, also my design, is half a 3 foot 10 tpi 1/2" acme. I adjust the backlash there by re-timing two 10 tpi nook nuts screwed into each end of the ball bearing supported, rotating nut carrier, the screw doesn't turn, and now that I have roller (ball bearing) feet on the head casting, it will do 1 to 2 thou backlash pretty reliably with no stiction. Hiding one of these ball nuts inside that contraption will be fun. Not impossible, but fun, depending on one's definition of "fun" ;-). Thanks for the quick reply with a useful suggestion Greg, its appreciated. 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> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ The best possible search technologies are now affordable for all companies. Download your FREE open source Enterprise Search Engine today! Our experts will assist you in its installation for $59/mo, no commitment. Test it for FREE on our Cloud platform anytime! http://pubads.g.doubleclick.net/gampad/clk?id=145328191&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
