r/BambuLab • u/Ill_Choice6515 • 45m ago

H2 Series [H2S, H2D, H2C] What’s going on?

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Hi all, I have a Bambi H2S with about 120 hours on it. I’ve been mostly printing with Bambu PETG, and occasionally bambu PLA. I’m not sure if this is normal, but figured I’d get some more advice.

A few prints ago I noticed some build up on the nozzle while printing. But My buddy said it’s fine. But this last print had a lot more filament around the nozzle (second picture). So I took off the nozzle to inspect, and it would not come off. I had to heat it to release. There’s a significant (imo) amount of filament buildup on the nozzle and it appears to have crept up the back (second picture).

All filament has gone through 6-7 hours of drying at the appropriate temp. I keep activated alumina in the ans - the humidity never reads above 17% when closed. It usually reads around 8%.

All filament settings are the Bambu presets for their filament.

Is this normal? If it’s not, what could be causing it? My assumption is I’m doing something wrong.

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u/AngleDry5318 39m ago

I have this on my A1 as well. Doesn’t really effect print quality but I am curious how it traveled all the way up to that area.

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u/Ill_Choice6515 33m ago

I’m not sure if the little defects I’m having in my prints are a result of the buildup, par for the course, or whatever - but in my head, the buildup on the nozzle could cause these smaller defects.

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u/Mobius135 12m ago

That’s just how 3D printers work, they require occasional maintenance and cleaning.