While printing TPU I keep getting a error message saying that the extrusion resistance is abnormal and that the nozzle might be clogged. But the print seems fine and when I press Resume it prints fine until I get the same error message again.
Material is Stratasys TPU 92A (fully dried), used a new 0,4mm nozzle, printbed is levelled and cleaned, etc.
Anyone experience with this? Any clues?
Thanks!
Have you checked if your nozzle is clogged?
Did you perform a cold pull before printing?
You might also want to check if the filament path is smooth, and that you are using the TPU bypass in the rear. Or do you use top feed?
Nozzle is clear and I’m using a new nozzle so I didn’t do a cold pull.
I am using the bypass in the rear.
It’s working a lot better now that I increased the temperature with 10 degrees and reduced the flow by a little.
What is the flow rate and layer height you are trying to use?
This could also be that you are forcing to much filament out of the nozzle (to high flow ratio).
I get this with PEBA 95A if I go over 1.0 in flow ratio.
