On Sunday 28 May 2017 21:07:15 John Thornton wrote: > Hi Gene, > > The Z axis ball screw attachment is a bit weak and is not very > consistent. It attaches to the quill with a 1/4" screw and another one > a bit bigger. And the X ways have a bit of wear so the saddle dips a > bit in the middle. > > JT > Ahh, I was geting my exercise by jumping to the conclusion you were referring to the knee drive.
Wouldn't be the first time. :) As for the quill drive, I think I'd make a clamp collar to grab the bottom 1/4" of the cylinder of the quill, and plant the ball screws bottom in that. I'd have to see & feel the table ways though. I'd assume you've tweaked the x gibs already. It could be slack in the y gibs allowing the table to go off balance, pivoting up on one edge or the other of the y saddle on the knee. That could mimic wear in the center of the x table. I'd sure put a dial on it and do some wrestling. Sometimes what you feel, and what the dial tells you are different things. OTOH, I am probably carrying coal to Newcastle since I've no experience with a bridgeport. > On 5/28/2017 10:25 AM, Gene Heskett wrote: > > On Sunday 28 May 2017 08:20:24 John Thornton wrote: > >> I wish the BP knee mill Z was good enough to 3D print I'd give it a > >> try... I just need to get on with making the CoreXY printer. > >> > >> JT > > > > Whats the problem with it John? 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
