Lines on print - core X Y

Hello,

i have sapphire plus, core X Y Printer. when i try to print test cube, i am getting lines on it.

adding pictures.

... depending on mechanical properties this could be "normal" ... you'll need a pretty stiff and accurate mechanical setup and superior extruder-controlling to get it "smooth" without lines or ringing.

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Viktor
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Hi

thanks for response,

i have sapphire plus, z is on rails,

today i found there was a temperature variations, and did PID tuning again and it reduced a little bit.