MUU3... just hasn't been working since i got it
My Prusa MK4s was working great.. almost no issues . None that i couldn't fix.
I purchased a prebuilt MUU3 , set it up but i have to say ( transparently) that it has taken the fun out of this hobby by a huge degree.
I get "FINDA filament stuck" wong filament errors ( yes i changed them on the settings and MUU3.
its one thing after another. Im to the point im spending more time fixing than printing . Honestly if i could i'd return it.
So.. my question after my rant is.. For those with MUU3.. what did you discover later on that you wished you knew when you set it up?
only use Prusa Filament? get a cover? Why the stuck filament errors? ( im only printing a #@#@# benchy)
help.
Newt.
RE: MUU3... just hasn't been working since i got it
All the issue I got on the MMU3S were principally due to:
- retraction of filament with strings that messed up the ball mechanism
- the filament pressure
For filament pressure I mean the force you need to apply to the filament to extract it from the box and pull inside the MMU3. That is a complete random situation, where based on the filament box you use, the weight of the spool, the size and length of the tubes, the forces can vary significantly.
I purchased a Precision electronic dynamometer weight tool, that I crimp to the filament exiting from the bowden just before the MMU, end I apply a force to see how much force the motors should apply to pull the filament. And sometime I saw incredible number 1.8KG just to move the filament! That numbers cause the MMU to fail because the filament shifts under the metal pulley of the MMU3.
This is the bloody reason for the majority of MMU3 failures. So I check always the force to pull all the filaments, and if it is high, I play around with tube position, spool position trying to minimise it.
RE: MUU3... just hasn't been working since i got it
Thanks.. after a 5 hour session with support and another 1 hour session it was declared a write off. I was allowed to send it back for a refund to the distributor. so my MMU3 days are over and bought a Bambu H2D for color printing..