AlexHaysler

Hi guys, A part I've successfully printed before suddenly started to fail due to overlapping (see images) - does anyone know why this could be? Checked the prints by printing an Ultimaker robot which printed correctly, then resaved the STL and GCode files and the same problem still occurred. Could the file suddenly become corrupt? Used SolidWorks 2015 to design the part and as mentioned before had printed it fine previously.

Thanks for your fast responses guys! Manually fed in filament quite a few times until came out clear, then re-run it and seemed to work fine again! Will monitor over the next few prints, and post photos as on closer inspection of old prints there is some very minor underextrusion. Bowden tube also wasn't pushed all the way in, what a dope!

Update - motor isn't even rotating during prints but works fine when changing filaments. Anyone got any ideas?

Hi, Have been printing with my UM2 Extended for a month and a half now, had a problem today with motor slip though! Once that was sorted, went through material change process, cleared nozzle and went to print and after ejecting filament as normal at the start of the print it just started to print the model with dots of material! :( Does anyone know why this is? Looking forward to some awesome advice