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Odd layer shifting only on one side of the print ?  

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bore
 bore
(@bore)
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Odd layer shifting only on one side of the print ?

Hello all,

I built my new mini+ from scratch last week, and the first prints seem to have some issues with layers only on one side. See pictures :

In the first pictures are the results from different Z height, between -1 and -1.2. The second picture is at -1.11 which seemed to give the best quality of the bunch. Even after that i tried to print the default frog print in the usb stick just in case. Here are the results :

This print is not cleaned. While nothing "broke" during printing at least, it clearly shows one side is having issues making layers correctly. Its always the same side (left when looking at the front). It makes me think of an uneven print bed, but it is brand new and cleaned with IPA before printing, and it does not look bent at all.

The firmware has been updated to the latest version before any of this. I've run many first layer calibration between -1 and -1.5 just in case, but it doesn't help. One side is always funky compared to the other. The best i've got is 1.11 and is used for the frog print.

Considering this is my first 3D printer ever, i don't know what could cause this (except maybe me not tightening something enough while building).

I believe i tightened the belts enough, they dont sag but you can still push them down a tiny bit if you press them. I tried looking at them during printing, they don't seem to be "late" or "loose".

I am a bit lost on how to troubleshoot something like this, any help is appreciated.

Thank you to anyone seeing this.

Publié : 17/02/2024 10:41 pm
bore
 bore
(@bore)
Membre
Topic starter answered:
RE: Odd layer shifting only on one side of the print ?

Update for those interested, it seems related to X axis belt tension. Noticed some wiggle room when the X axis motor changed direction which caused the belt to not respond immediatly.

Increased tension and i can now get a pretty nice first layer. However, While each layer is now well printed, i get entire layer shifting. Might need to readjust the belt tension entirely.

Publié : 25/02/2024 11:56 am
Diem
 Diem
(@diem)
Illustrious Member

https://www.prusaprinters.org/prints/46639-tension-meter-for-the-gt2-belts-of-i3-mk3s-or-prus

Cheerio,

Publié : 25/02/2024 7:16 pm
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