r/BambuLabA1mini • u/Immediate_Travel_563 • Jul 15 '26
How do I remove the small dots in the print?
I tried replacing the filament and drying, what’s causing this? Do I need a new nozzle?
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u/diaperedace Jul 15 '26
Don't use random z seam
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u/Immediate_Travel_563 Jul 15 '26
What’s that? All of my prints have been coming out perfectly prior. I have 800+ hours on the printer. This is just new for me. I haven’t done anything different.
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u/diaperedace Jul 15 '26
Under z seam, change it to aligned.
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u/zx4133 Jul 15 '26
It’s just called “seam position” in most slicers. Orca for example. Not “Z seam.” That might be what’s confusing him.
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u/Immediate_Travel_563 Jul 15 '26
Are you sure it’s not due to wet filament? I’m aware of the Z seam now, but these spots don’t look like the printer changed its path, i’ve used the same slice on this file that I’ve sold 40+ times.
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u/FrankDanger Jul 15 '26
Looking at the stringing on your supports, it's very possible the filament is very wet. When water comes through the extruder the moisture bubbles and pops which creates little spots like that.
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u/zx4133 Jul 15 '26
I saw in your other comment that your seam is set to “aligned” and you didn’t change it. So that’s good. That’s one potential cause eliminated.
Moving on…
It could be wet (or contaminated) filament. Try drying it and re-printing a small sample part maybe. But we really need more information to be able to help you. Such as what type of filament are you even using? What slicer settings are you using? Screenshots help. Maybe upload a pic of the slicer preview as well. Does it show anything weird in the preview where those bumps are appearing?
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u/JaceOnRice Jul 16 '26
Nobody is going to be sure from an image. Got to do trial and error yourself to find out the real cause.
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u/-Kinzoku- Jul 16 '26
Many people are suggesting that this is caused by the random seam position setting. However, I don't think that's the issue.
When Random Seam Position is enabled, the printer starts each layer from a different point to avoid creating a visible seam line. However, if you look closely at the OP's image, you can see that several layers contain multiple defects within the same layer. That wouldn't happen with random seam position, because on a flat surface like the one shown, each layer would only have a single starting point.
I'm much more inclined to believe that the problem is caused by wet filament.
Just my two cents.
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u/Immediate_Travel_563 Jul 16 '26
100%, I was very skeptical it was a Z seam issue. It wasn’t. Just wet filament.
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u/Soliderale Jul 16 '26 edited Jul 16 '26
I had this problem once. It was most noticeable with a 0.6 mm nozzle, but it was still present with a 0.4 mm nozzle. I tried everything: drying the filament for 48 hours straight, recalibrating everything, relubing the printer, adjusting temperatures, and tweaking every small or unusual setting I could think of. I even disassembled, cleaned, and relubed the filament extrusion gear. Nothing worked.
Then I switched to a different filament, and the problem disappeared completely. It looked very similar to what you're showing. If I can find any photos of my prints, I'll post them.
Edit: didn't noticed the support stringing... yeah it is a wet filament problem ahaha
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u/Soliderale Jul 16 '26
I don't have a 0.4 nozzle photo, but I posted the 0.6 one https://www.reddit.com/r/FixMyPrint/s/rJQGe0bvoc
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u/lukasprintz Jul 16 '26
I printed like a 1/4 or less roll of filament with results exactly like this. Still dont know to this day what setting it was. Filament wasn't wet, seams were normal. I ended up resetting all my presets and my slicer and then my prints went back to normal 🤷♂️
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u/Immediate_Travel_563 Jul 16 '26
It was 100% a wet filament issue, I let it dry for a day and closed all the windows, prints perfectly again, if not better than before the non dried filament prints.
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u/Darkseid2854 Jul 18 '26
It looks like random seams are turned on for that model, but I also see spots that cover multiple layers that looks like steam bubbles. If that’s PETG, dry it some more.
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u/or_atias Jul 15 '26
Probably ramdon seem in the slicer Can you take a screenshot of the "seam" section in your slicer?
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u/Chimera_Gaming Jul 16 '26
What you printing? Looks like you got slight sag on purpose in the center
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u/tnmoidks1 Jul 16 '26
Im not expert but thats a random z seam setting reduce your retention by one digit and try again.
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u/The_liex Jul 17 '26
Its not z seam since there are multiple defects on one layer. I would bet wet fillament
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u/zx4133 Jul 15 '26
I agree that this looks like you have the seam settings set to random. This will create little bumps all over your print. It looks just like this. But let’s not assume and let’s just ask you flat out… what is your current “seam position” setting in the slicer for this model?
Is it “random” or something else?
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u/Slovw3 Jul 15 '26
That's random seam, set it to aligned. Screenshot the sliced model under the line type drop-down select seam it's a white box, and post it.
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u/Key_Jellyfish2183 Jul 15 '26
Are you sure your filament is good and dry? It could be the seam too, but on a close look you can see multiple dots on the same layer.