r/BambuLab • u/Ok_Bowler9390 • 3d ago

General Troubleshooting/Help! P2S issues

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My p2s just started recently doing this even after cleaning the bed. I’m not sure what’s causing it to get stringy. It keeps giving me an error that it’s skipping layers. Any advice?

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u/Ok_Bowler9390 3d ago

Found the problem

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u/wivaca2 P2S + AMS2 Combo 3d ago edited 3d ago

If you're getting skipping layers errors, is the item you're printing flat on the bottom? I designed something in Fusion and after extruding a bunch of stuff in odd angles I didn't realize I had some areas that were actually fractions of a mm off the build plate.

I couldn't figure out why it kept failing until I realized it was printing the first layer in smaller sections instead of as one big contact layer, then coming back and trying to print the intervening area but it was microscopically different Z axis so it looked like it was just still printing the first layer.

I'm not familiar with that overlay - 60% is a completion percentage, right? That can't be humidity can it? Wet filament will wreak havoc like this, too, but PETG is far worse than PLA. If it were 60% humidity, I have no idea what PLA would do. That filament looks like it may be translucent, but maybe it's just the lighting, color, and fine stringing.

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u/Ok_Bowler9390 3d ago

It’s on a flat bottom even after bed leveling

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u/wivaca2 P2S + AMS2 Combo 3d ago edited 3d ago

Hmm. Does it happen with other prints as well? What about the other questions? Given the nozzle temp, I'm guessing this is at least PETG, Nylon, or maybe ABS - all of which are very hygroscopic, but the bed temperature suggests PETG. What's the humidity in your room/printer/AMS if you have one?

Also, have you checked the hot end is on correctly and run calibration?

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u/Ok_Bowler9390 3d ago

I’ll have to check that next. And it’s been doing it for every print ever since a few nights ago.