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Print head totally overflowed and clogged with massive blob of PLA

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This is common if your part doesn't stick to the glass and starts getting dragged around wtih the head part way through the print and then you walk away for 3 hours.

You need to learn how to keep your parts sticking to the glass better but first - to fix this issue - realize that even hot tea is plenty hot enough to loosen the PLA. So get a hair dryer or a heat gun and start heating all that plastic up and then remove the fan shroud and then start removing it carefully. It's very easy to damage the 2 cables going into the back of the heater block so be careful and gentle back there!

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