Bambu p1s
Pla. Its been dried in dehydrator for 4 hours at 55
Ironing is off (seemed to be the same with ironing on)
Ive tried turning the temp down to 210
There is a prime tower and purging is set to 1x
Flow rate is 0.96
Aux fan is off
Relatively new nozzle (less than a couple months old and I dont print that often)
I dont know what other info might be relevant
Its not the absolute top surface though, the black icons are raised higher and those look fine.
Really at a loss. Does anyone have any ideas?
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Is part of the print lifting from the bed during print? That happens sometimes and it would make the nozzle dig into the already printed layers on that side
If your nozzle is extruding clean, unlevel bed like everyone is saying. Temps too high or low, cheap filament potentially, speed too high or low, work surface shifting under print movement. While I don’t have experience printing, I have laser experience and when I get poor results it is often on of those. These systems somewhat go hand in hand. Fans are a major aspect for quality. The higher the airflow with lasers for the most part the cleaner the burn and contaminate free bed.
Absolutely looks like nozzle dragging over your layers. Bed uneven for some reason? Uneven heating? Plate not sitting flush? Nozzle loose?
Wash your build plate with dish soap. Rubbing alcohol isn’t enough long term.
This is likely the culprit. Ive been using rubbing alcohol for a while on this bed
Thanks all. I will look closely while its printing to see if anything is lifting. I do a bed level every print
Others have said similar, but make sure the nozzle doesnt plunge into the work and the work doesnt ride up. Bed adhesion, leveling, ect.
Looks like a bed-leveling issue to me? Maybe theres a high point and the nozzle is crashing into the print at that positon.
@dom You sure it’s just the top layer? That looks like rubbing that might occur when something’s warping off the bed or when the bed isn’t leveled. In those cases, it would likely be present in more than just the top layer.


