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It looks like this problem remains unresolved. I am experiencing the same problem with my Orion. I have tightened the belts and reflashed, you name it but still have the problem on big prints. It is not consistant and I expect it is something like heat. To get things working I simply slow down the ...

I am new to this but my normal job involves solving complex machinery problems. It seems to me you are mixing two issues. The first question is how flat the build plate is relative to itself? The second question is how much is the build plate tilted from perpendicular to the z axis? Why not replace ...