I have a dial indicator that I mounted on the side of the platform (better than using a finger
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I go through the 4 measuring position ( 1) center 2) y110; 3) x70 y-30 4) x-70 y-30 and get the Z, Y and X spot on. However, when I recheck the center measurement it has dropped. I repeated the process several times and each time the hot end gets further away from the build platform. I re adjust the z, y and x and recheck the center only to find it has moved again.. The amount is a out by about .40 of a mm each time.
Next I adjusted the z= 0 using the paper method (till I could feel the resistance) on the center. Next I did z, y and x. The hotend was way lower at the y and x calibration coordinates.. The center gap at z=0 is about 2 to 2 and 1/2 mm off the hot bed touch's the hotbed at the x70 y-30 coordinate and can not be z=0ed at the x-70 y-30 coordinate it reads (in Repatier as sitting at z 1.3).
I thought that maybe I was seeing things so I tried a print and had the hotend dig right into the plexiglass.
Man I fear I'm gonna bust the whole thing off the build platform or strip the stepper belt..
Any suggestions would be greatly appreciated