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MATERIAL (PLA) STOPS FLOWING OUT AND IT GETS A CERTAIN FORM THAT DOESN' LET THE MATERIAL RETRACT TO BE CHANGED I HAVE TO GET THE BOWDEN TUBE OUT AND PULL IT FROM THE HOT SIDE END . ALREADY CLEANED THE HOT PART AND SAME PROBLEM OCCURS AFTER THAT. I DON' T KNOW WHAT OR WHERE THE PROBLEM IS OR WHAT TO CHANGE . PICTURE OF THE MATERIAL ENCLOSED.
Does anybody knows if the PC resistance to temperature needs any extra-treatement? Or is it achieved just by printing to the Temperature recommended by manufacturer?
That was exactly the case, you were right. I bought an automatic vacuum (Ministar) and with 15 secs of heating time and 2psi seems to work fine. thanks for your reply it really helped.
I´m producing my dental models for making dental aligners on my UM2+ wich by the way works perfect. I use PLA anN infill of 25-30% but when trying to make the aliogners on the vacuum machine (2.5-3 BAR) they shrink. Should I increase the infill? or any other change in the process to avoid this ?