How to Print multi-TPUs or Flexible Materials in MMU2S
Hi Folks,
I recently set up an MMU2S with all the required supporting parts.
At present, I'm facing a problem with the flexible material, mainly with the TPUs. I'm able to load the material into the Print head, through the multi-material unit and the extruder is able to extrude the material and print objects, till this part everything works well.
The problem begins when I'm switching or changing the Material. The filament stays in the print head with a bulb, would like to say that its partially stuck (FYI: no coiling or knotting in the print head). The bulb requires more pressure to be got removed from the print head feeder motor and is not able to retract to the MMU2 unit.
I tried to vary the pressure of the filament feeder in the extruder. as well as the MMU2 unit, but not a satisfactory solution.
I'm would be happy if anyone could share your experience on unloading TPU or flexible material, while Multi-Material printing.