MK3S jams TPU
I upgraded my MK3 to MK3S because it claimed to be better for flex filaments and easier to service. After a day of fails and testing every extruder gear alignment and tension possible I suspect the gears being too protruded into the filament path is the problem. The filament has to bend around the extruder gear and then somehow bend back to fit down the PTFE, this design seems pretty bad. But is this a problem with the design or assembly?
I saw a post in a recent thread that seems to agree the filament path is the problem.
You may do better with an extruder with a corrected filament path like a Butterworth or BNBSX. Prusa R4 aggressively protrudes motor shaft Bondtech into filament path.
Does anyone have experience with either of these extruders? Can someone confirm this is the problem?
RE: MK3S jams TPU
I had similar problem and finally got it working loosing the screw to the limit, a bit more and the screw would fall, with i was able to lad the filament and even then i still had some jamm because of the retraction and i had to disable it
RE: MK3S jams TPU
I went straight for the butterworth extruder because I also noticed during a regular 1 hour print the extruder motor was at 135 degrees F and climbing with the R4. I figure it had to do with how they changed the airflow around the heatsink and also the motor had to work harder to force filament down the ptfe with it so offset.