Hey there,
I've just got my new UMS3 set up.
I've had a handful of successful small PLA prints (Benchy etc) but have started printing larger projects (7-8hrs) and I'm getting consistent failures.
The failures happen both with PPVA support and using the PLA for support structures as well.
Here's what's happening:
Print seems to kickoff just fine, and I'll watch it for a while, then somewhere down the print something happens to cause the printer to stop extruding.
A couple of times the bowden tube gets pulled out of the feeder on the back of the machine. (I've tried trimming the tube a bit and re-chamfering, and creating a little circlip to help hold the tube in, but that hasn't helped the root cause)
When this failure happens I run the print core cleaning wizard, and do a bunch of the hot\cold pulls (using PLA, as I don't have cleaning rods yet)
I've repeated this thorough cleaning and retry many times now, and I get what appears to be a nicely extruding thread coming out of the nozzle.
Then I start the print again and the same event happens.
During the last failure: (about 30mins ago) I watched while the print failed.
I was running the part in single material (PLA) and about an hour into the print I saw the end of the nozzle was clearly boogered up.
I'm using the two materials that came with the machine:
Ultimaker Tough PLA Black
Ultimaker PVA Natural
Print settings are coming from the standard CURA visual settings.
I'm new to problem solving this and need some expert help.
Thank you.
jg