Calibration madness

[xchrisd]

you could also check the following thread in terms of calibration issues:

On achieving a perfect level

Well, almost perfect. It is within plus or minus .02mm or .0008". I’ve posted it to Thingiverse: Here’s a video of it in operation; So I did a manual level and learned that the front two rows were off. The last row seemed ok. So I decided to put a Dial Indicator to it. I learned that the grid points were all over the place. So I tried manually tweaking the points using the “M421 In Jn Zn” command to input corrections to the grid. WORKS! Also wrote a couple of GCODE commands to do the ch…

there was the firmware update between,- i think there are several other threads about leveling problems.

Hope it helps!