Bambu 4-in-1 PTFE Adapter on H2d

I get your point. It’s frustrating to get caught out. FWIW, you might want to get yourself a few meters of quality PTFE tubing as you will need to replace it over time. You want BL’s or look for 2.5mm ID, 4mm OD quality PTFE. Avoid the cheap stuff as it will cause problems; filament loading errors and I believe added extruder wear. (yes, I’ve learned…)

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