Having issues with CF filament loading on H2S

Bambu Lab H2 Series
1

I recently upgraded to the H2S, coming from a Qidi machine. On the Qidi I exclusively printed with CF filaments (ASA-CF/PET-CF mainly) and had zero issues with it handling any brittle filaments. However, on the H2S during the load from external spool, it moves the print head to the far right thus bending the PTFE tube so severely it snaps the filament. I’ve tried now with ASA-CF, PET-CF and PAHT-CF and the same thing happens every time. All spools are dried to spec. Even tried with new spools right out of the packing.

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Since I’m new to Bambu Lab and these printers, is this a known issue or is there anything I can do to fix this?

Cheers.

2

I don’t have an H2 but in other printers with constrained PTFE paths, you can generally solve this by printing a “glass riser” which sits on top of the machine, under the glass, and gives an extra inch or two to the top space where the cable chain runs around in. Then, you can unhook the ptfe and let it live in the space above, which gives it plenty of room to do a lazy angle down into the extruder. See if one’s made already

3

Yeah I’ve seen those for other machines. I may have to look into that.

I’m still curious if anyone else has similar issues. All I’ve seen on YT is this printer can handle everything. Kinda disappointed, really.