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Hell guys,

iam finished with the print of the machine vise. Unfortunately, my 2x base parts arent looking that good on one side.

See screenshot. Where do these lines come from?

It is not the Z-Line, because the front surface of the part was on the heatbed itself.
Others do have also these isssues and they dont know why.

I used Slic3r PE as slicing software.

Would be great, if someone experienced this kind of problem and solved it :).