Does anyone have any good ways to remove all the coating from EMT. The coating is cause jittery movements on my x axis as well as loud grinding noise that is rather irritating. The grinding is coming from the middle assembly during slow movements. At first I though a bearing was shot cause i could feel the vibrations in one bearing more then other so I replaced it and it made no difference.
The Y axis moves nice and smooth at any speed not sure why just x is a problem. The steppers rotate nice and smooth so no problem there. Could it be an alignment issue in the center assembly? All my laser etchings come out with nice round O’s and seems to run very square.
Time to save up and go to SS tube I think. That crap is expensive in Canada
Just thought of something… The bolts that hold the bearings in the center assembly I have them pretty tight would loosening them off a little help?