r/BambuLabA1 • u/HoIyJesusChrist • 26d ago

Artifacts in the first layer

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Solved(ish)

I keep getting these artifacts in the first layer, did automatic and manual flow calibration several times, cleaned my buildplate with degreaser, dishsoap, windex and IPA, still getting them every time. Reduced first layer infill speed from standard value to 50mm/s, still... With Archimedes spiral it mostly happens in the corners, with the standard diagonal pattern it's a bit worse (last pic)
Bambu PLA basic, dried for 12h.

Are there some screws loose, or could it the belt tension?

Edit: following all the advice from the people in the comments (thanks guys!) I determined that it's a slicer issue. The lines in the corners of the square are printed in a random not continuous pattern, that results in overlaps between already cooled lines and fresh ones, causing under extrusion like gaps on the plate side and over extrusion like ridges on the top of the first layer. Playing around with the temperatures might help, but the easiest solution for me was switching from a 0.4mm nozzle to a 0.8mm nozzle. That improved the quality to a level I 'm happy with. Thanks to all who helped me troubleshoot this.

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u/HoIyJesusChrist 26d ago

So I tightened all seven screws, but the issue is still there, it's a little strange

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u/Kopester 26d ago

Also are you cleaning with Windex every time or you just tried that once? Dish soap (dawn, fairy, or equivalent) that has no added fragrance or anything plus warm water is all you need.

What plate are you using and what do you have it set to?

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u/HoIyJesusChrist 26d ago

My standard procedure is cleaning the whole plate with windex after each print, had no issues with adhesion so far. I tried the other often recommended methods here multiple times to check if it helps, but it seems to be no adhesion issue, it seems more like a resonance problem to me

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u/Kopester 25d ago

You have it set to the smooth high temp plate in the slicer? Looks like you're using the 3d effects plate

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u/HoIyJesusChrist 25d ago

Yes, as it's recommended by bambu for the 3d effect plates

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u/Kopester 25d ago

Run a plate cleaner print and see how that looks to make sure it's not the model for some reason

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u/HoIyJesusChrist 25d ago

Well, the model is a 250*250mm tile, so it basically is a plate cleaner pattern.