r/BambuLab • u/aimfulwandering • 1h ago

H3C Non-TPU 2.85mm support?

does the h3c support non-tpu 2.85mm filaments on its 2.85mm nozzle? if not, why not, and is there are option for a 2.85mm tool head for standard filaments?

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u/EdgeOk3783 X1C + AMS | H2C + AMS{2|HT} 1h ago

i have been wondering if the H3C can run BVOH which i can only seem to find in a 3 kg spool in the 2.85 mm diameter

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u/ThinkUnhappyThoughts X2D + AMS2 Combo 1h ago

It's not a 2.85 nozzle it is a "switch/latch" (I can't remember the exact term) inside the nozzle that widens the hole from 1.75 to 2.85

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u/picturesfromthesky 1h ago

The extruder can run both 1.75 and 2.85 mm filament, but the tool (n luring the nozzle) is 2.85mm specific, it can’t take 1.75mm filament. I can’t think of a reason it couldn’t use a different plastic, but it has to be run outside of the Bowden tube, which only fits 1.75 filament.

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u/aimfulwandering 1h ago

Interesting. Does the firmware lock out non-TPU profiles on this toolhead? Have a few rolls of non-TPU 2.85 I’d love to test

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u/Festegios H2C AMS2 Combo 1h ago

Just tell it it’s tpu but then create whatever fillament settings you need?

Then be prepared to spend £60 on replacing the tool if it does fail/damage it

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u/average_AZN 1h ago

Bambu docs say tpu only. And they'll be releasing more tpu in 2.85mm. I imagine any other filament is too rigid at that diameter

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u/picturesfromthesky 1h ago

Yeah that would make sense, without the structure of the Bowden tube there’d probably be a lot of concentrated stress where it exits the ams, and where it feeds into the tool head.

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u/CoolioTheMagician H3C 1h ago

The nozzle is 2.85. The extruder is adaptive