I was printing with HIPS and recently switched to PLA. The first few prints went fine but recently i’ve been having lots of problems with the filament grinding. I lose about 3 in every 4 prints due to it. Each time I clean the notched rod in the extruder to ensure all the grooves are clear and adjust the set screws to anywhere from the recommended 8mm gap to tighter, but most times I end up grinding a notch in the filament and losing the print.
I’ve been able to extrude by hand after it failed so it’s not a clog, i’ve even tried the “heat to 250, cool to 90, quickly pull out” to clear the nozzle of anything inside.
I’ve tried temperatures ranging from 190 to 210 with no luck. I usually get the first layer or 20 down, but not much past it. The filament is 3mm IC3D PLA, tried white, black and natural, all grind around the same rate.
Slicing using stock Cura settings for standard speed PLA.