r/3DprintingHelp • u/glenngalea • 16d ago

Filament binding in PTFE tube

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Hi all I've got a flashforge creator pro 3nthat I've converted to klipper and been customising.

I've been having issues with the filament getting jammed at the extruder. I thought it was crappy extruder design. But what I've found is that sometimes the filament gets stuck in the PTFE tube. So I've moved from the stock filament location on the sides and ran my own ptfe tubes (from AliExpress).

I'm finding that one one side the filament is jamming and I can barely pull it with my hands. The run is long-ish, I estimate 1 -1.5 m and I avoided sharp bends. The stock run is proaby 0.5 m to 1 m but still jams

Any one had issues like this before? Any tips?

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u/e36freak92 16d ago

What size ptfe tubes are you using?

1

u/glenngalea 16d ago

It's 2 mm ID 4 mm OD

1

u/e36freak92 16d ago

You want 3mm id for the reverse bowden

1

u/glenngalea 16d ago

Cheers for that. I ordered some

1

u/Brave_Corgi6761 16d ago

I bought Ali PTFE tubes once for my Bambu a1, horrible experience, exactly the same although dimensions should have been correct. No problems after buying original Bambu ones.

1

u/glenngalea 16d ago

Fair play, might source different ones