PeeWee3D

It just did it again while printing the calibration XY test ! :(

Thanks for the reply. I calibrated the lever too be on the safe side, and am now printing with a skirt and core2 in the correct position for now... I will keep you informed if the problem happens again But why in hell would it try to print the skirt with both materials as you suggested ???

Hi ! Strange problem: I'm printing several large pieces without any support, using only printcore 1 in Blue Ultimaker CPE, but the UM3 sometimes begins the print by lowering core 2, which ruins the print... Q1: why ? Q2: can it damaged itself in the process ? Q3: I now flick the lever by hand when I see this happening... Am I allowed to do that ? Does it confuse the printer ? Any help appreciated