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Strange uneven pattern on the 1st layer


shurik
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Posted · Strange uneven pattern on the 1st layer

Well, one picture worthy 1000 words:

WP_20150927_01_12_37_Pro.thumb.jpg.d5bc51a715abe1d4fb2064780cd9cf3e.jpg

PLA, recently installed Olsson's 0.4 nozzle.

Pay the attention to the rough and uneven layering everywhere.

Why? What can be done to fix that?

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    Posted · Strange uneven pattern on the 1st layer

    Hi guys,

    Yes, the 1st layer is the standard 0.3mm.

    What are these round circles? The buildplate cannot be lowered or raised, as it will worsen either the round-circled "flower" or the rest of the plate.

    What a nasty puzzle...

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    Posted · Strange uneven pattern on the 1st layer

    I'm pretty sure i've seen something similar on the forum (it was a picture with a camera that takes pictures of heated areas).

    It almost looks like the build plate is not even at certain spots, or maybe it comes from the rods that are slighlty bent?

    Can you try maybe to flip the build plate on the other side?

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    Posted · Strange uneven pattern on the 1st layer

    Thanks guys, will try to flip the glass although it is unlikely the source of the problem. It used to be good, except some slight tilt to the far-right corner, but this is how the printer originally came. More or less, all the sudden, there is this strange pattern. Most probably, it comes from the rods or the belts but at the moment, have no idea where to start looking at.

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    Posted · Strange uneven pattern on the 1st layer

    Just in case. Check the screws are 'in' and they don't hit the glass

    https://ultimaker.com/en/community/view/10335-glass-plate-not-flat#reply-115423

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    Posted · Strange uneven pattern on the 1st layer

    I would take a close look at the rods and see if they wobble. See if the patterns match up with full rotations of the pulleys.

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