X axis is not accurate: I was running a very thin (.040") Aluminum part taped to an MDF backer board and using a .125" End mill (2 flute) running at about 1000mm/min (I know all these mixed units.. sorry) the part that was supposed to be 1.180" across in the X and it came out 1.135"
I did not realize it until I had a lot of parts... Damn. Thought, I screwed up, but my layout if good. Reboot Axiom and cut one more... nope. Still off.
I'll put a piece of scrap even slower and report back but now I am running out of time so I am posting this now if case somebody has an idea.
Y and Z are fine at +/- about .004" Lead screw is not sloppy
I'll setup a 1" dial and jog 20mm in the X and see if that reads accurate with no load..
Garylyb, You lead me to it. The ganty was good-n-tight. But as I was wriggling things for looseness I found the X lead screw would pull in and out - A lot!. When I took the plastic cover off the side the nut for the lead screw was lying on the floor of that cavity. I put it back on and tightened it up a bit.
I used as much torque as I could muster with a wrench on the nut and my hand grip on the lead screw... I'll say "mot much" torque.
Anybody know if there is a technique and torque spec?