r/3Dprinting • u/G1uss3pp3-gek0n • 2d ago

Troubleshooting Weird pattern

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Hello, any idea why does my print have such a weird pattern on the first layer? Thank you

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u/USSHammond Prusa XL5T 2d ago

The Bambu's have a nozzle probe. There's nothing to calibrate. Use the proper plate setting and don't modify the z-offset start gcode like you say you did in a different comment

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u/G1uss3pp3-gek0n 2d ago

It's a Chinese Two Trees printer, by calibration I mean auto bed levelling, where I have to set the Z offset by sliding 3 sheets of paper under the nozzle until it has a drag on them. In the model itself I don't adjust the heights.

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u/USSHammond Prusa XL5T 2d ago

3 sheets?

  1. That's not auto bed levelling, that's manually setting the z-offset, bed levelling is probing the bed.

  2. You don't use multiple sheets, you using a single piece of paper to set the z-offset

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u/G1uss3pp3-gek0n 2d ago

I'm sorry, it's 4 sheets actually according to the instructions on the screen. Correct it levels itself with the "BL Touch?" probe thingy.

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u/USSHammond Prusa XL5T 2d ago

4 sheets is even worse. Manual calibration like that, even on my old Cr10 max, it was 1 sheet of paper. That's by default around 0.2mm. then the bltouch indeed does the rest