I have done both the G29 calibration and the escher one a number of times. I am having trouble printing some test patterns such as this https://www.thingiverse.com/thing:123944... . When I try to print it the print head smacks the build plate and then rises several cm as it travels towards the z tower which it then hangs up on. Printing smaller things like rpi cases in the centre of the plate work ok with the first layer being noticeably thin at the front. I have also seen some accelerometer errors while doing the escher calibration.
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I have done both the G29 calibration and the escher one a number of times. I am having trouble printing some test patterns such as this https://www.thingiverse.com/thing:123944... . When I try to print it the print head smacks the build plate and then rises several cm as it travels towards the z tower which it then hangs up on. Printing smaller things like rpi cases in the centre of the plate work ok with the first layer being noticeably thin at the front. I have also seen some accelerometer errors while doing the escher calibration.