On Saturday 03 May 2014 08:33:16 andy pugh did opine: > On 3 May 2014 04:37, Gene Heskett <ghesk...@wdtv.com> wrote: > > Because the carriage isn't front weighted enough (the x motor is on > > the rear), it does tend to turn about a thou as it rises off the > > v-way to bring the front gib in solid restraining contact, and that > > is best handled with a back out move before the retrace move. > > Adjusting those gibs is a genuine chore as the only way to access the > > adjustments is to drop the apron coupling and run the apron and nut > > out of the way. > > Here is a set of pictures of how I made some tapered gibs for my 9x > (which is a stretched 7x) > https://picasaweb.google.com/108164504656404380542/Gibbs
Looks good Andy, but the 9x looks as if it has 3x the room to do it in. The gibs on the 7 are maybe 4mm thick, total. 3 hex head holdup bolts, 2 jack screws between them. Just getting an allen wrench into the jack screws needs a really short arm wrench because they don't clear the Z screw at all well. Very poor design. I saw someone else had done that, on a 7x but they first had to machine a set of holder jigs. By doing that, with the taper built into the jig, it looked like it worked well. Even if I could start with a 3/8" bar, the brass would still be pretty thin. But its certainly one of those do it in due time projects. And I do have the brass already, the last time I considered that, I hadn't yet tripped over a suitable brass bar. Thanks for the reminder. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available. Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
