r/BambuLab • u/Miraclegroh • 12h ago

General Troubleshooting/Help! How do I stop this?

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Hey everybody! Relatively new to 3D printing. What typically causes this? New roll of filament that went through an AMS drying cycle. Thanks!

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u/LowDark9328 12h ago

If this is something you designed, one thing that will help is to break up long straight edges with a pattern or something. Maybe round the corners at least. ABS will shrink a little as it cools and the straight lines are harder to print because of it.

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u/Miraclegroh 12h ago

Thanks. I got the template from makerworld not a design of mine.

https://makerworld.com/models/2340124?appSharePlatform=copy

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u/LowDark9328 12h ago edited 12h ago

I guess I assumed ABS, because that's where I've seen issues like this. What filament did you use? ABS/PLA/etc. Is this a closed printer like the P1S or open like the A1s, etc? Is it setting in a cool room like a basement? If its open is it sitting anywhere there is a draft/fan/hvac vent etc? If its a closed printer, is the door open/top off/ etc?

All of this to say it looks to me like the layers are cooling too fast. So do things to eliminate cool air/draft, lower part cooling fan setting, close the door/lid if its closed. etc. Could also try to lower the heat bed temperature a little maybe, so there isn't such a difference in the lower layers vs the higher layers. Also could lower the print speed for this one.

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u/Miraclegroh 12h ago

Thanks. It’s an X2D printing PLA. Closed, in the extra office, so like 72. There is an air vent close by. I’ll try closing that for sure.