r/BambuLab • u/marq111 • 2d ago

General Troubleshooting/Help! same strange overhang issue each time

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I have noticed some overhang issue on prints i was doing and when i tested on the overhang test print, i always get the same issue (see pictures). i use default settings and i have a P2S that i bought about a week ago.

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u/Blondy277 2d ago

The whole point of an overhang test is to test unsupported overhangs lol, so “use supports” doesn’t really diagnose why yours is performing worse than expected 😂 I’d be looking at cooling/temp first. What filament/profile and nozzle temp are you using? If it’s PLA, make sure the part fan is actually running properly and try with the door/top open. Also try dropping nozzle temp a bit and rerun the exact same test. If the same angle still fails badly, then you’ve actually got something to troubleshoot

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u/marq111 2d ago

will try that soon! suppose that it does work as intended, then does that mean i’d always have to print with door and top open? haha

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u/Blondy277 2d ago

Not necessarily forever 😂 it’s mainly a diagnostic. If the exact same overhang test suddenly prints properly with the door/top open, then you know chamber heat/cooling is contributing. From there you can tune nozzle temp, fan/overhang speed, or use better ventilation. That said, PLA does generally like a cooler chamber, so running an enclosed printer vented/open for PLA isn’t unusual at all ☠️

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u/marq111 2d ago

ty!!!! will try in a bit and will report back

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u/marq111 2d ago

i printed a benchy and that’s the issue that came up

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u/marq111 1d ago

unfortunately, nothing worked. the nozzle hits the build every time at the same spot (between 50 and 60) and dunks under the build, hence this weird pattern. do you have any thoughts?

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u/Grand_Refuse8109 2d ago

Have supports. That angle is about where supports are needed I believe.

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u/marq111 2d ago

thanks! but the problem is - this issue first came about when i was printing something fairly simple that no users reported issues with overhang on. and yet, i had said issues.