Stupid me, I decided to start a print while I went away and did something else. I usually check to see if the nozzle is extruding nicely before walking away.
When I returned, I had a ball of hair mess of PLA and a very dirty looking hot end. It appears that the PLA pig tailed and melted PLA all over the hot end, hex head screw, etc. It appears to be isolated to the metal hot end.
What is the best way to clean off all this excess filament? Not only is it unsightly, but the excess on the tip seems to cause newly extruded material to pigtail as it exits the tip.
I was thinking of cooling the machine down and carefully brushing/wiping acetone on the tip to clean it back to new. Good or bad idea? Is there a better procedure that I’m missing?
Thanks in advance,