Filament getting jammed pre-loading into MMU—filament tip kept sharp
I really struggle getting my filament to pre-load into the MMU. Nearly every time, it snags when exiting the PTFE tube and entering the MMU itself. I know Prusa's instructions say to keep the tip sharp, which I do, but still struggle with this frequently. Yesterday I opened the MMU and cleaned out the rollers, but this seems to be a problem before it even gets to the rollers.
This seems to me to be a very sensitive design. If I'm lucky enough to get it working, I'll likely see it go wrong the next time I have to change the filament.
Can someone please suggest ways I can make this work better? Are there some mods I can do to improve this? Maintenance?
RE: Filament getting jammed pre-loading into MMU—filament tip kept sharp
i Streight the Filament bevor i go into the last part of Tube, go to menu and start "preload to mmu slot ..." start activate the motor and push it in. yes it is a little tricky but not to hard
RE: Filament getting jammed pre-loading into MMU—filament tip kept sharp
I try to round the tip a bit and that seems to help. To be clear, the hangup is before the serrated drive pulleys
RE: Filament getting jammed pre-loading into MMU—filament tip kept sharp
Have you checked to ensure the PTFE tubes are properly seated and pushed right in??
If you open the MMU3 there is a small viewing hole where the end of the tube should be visible (just before the filament touches the pulley's)
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