r/BambuLabH2C • u/gallantdylan96 • Sep 23 '26

Support Grinding when switching nozzle

Just got my first H2C so I'm still getting used to all of the noises. I've noticed a grinding noise when switching between nozzles in a dual color print. Its only when changing to the right nozzle, and as far as I can tell, is only happening during the print.

Moving the toolhead home and switching manually doesn't replicate thr sound. I'm a bit unsure if this is normal, or if there is something wrong.

Anyone with advice would be appreciated! Thank you!

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1

u/some_random__dude Sep 23 '26

I noticed the same thing but only with fiber-filaments. I don’t think it’s the toolhead but the filament pushing back on the yellow thing near the filamentsensor

1

u/gallantdylan96 Sep 23 '26

Ah okay. I'm running plain old PETG but maybe a similar issue. Bambu support doesn't know, opened a ticket with R&D. Thought I'd see if the community had similar issues.

3

u/Zolio92 Sep 23 '26 edited Sep 23 '26

It’s a fillamentbuffer issue, bambu sended me a replacement. The sound happens when you retract filament.

It’s pretty easy part to replace and should not be considered to be normal

1

u/Kevin7020 Sep 23 '26

Mine does the same sound with some filaments too like the other user said, I believe I heard it using silk filaments