It seems that some of my plastic as it is being printed "flicks up" a little bit and then gets exacerbated when the nozzle drags it around. Also, at some point, the bottom layer gets picked up because of being dragged around and the whole print goes to hell. I have a heated bed at 70C, 190C for extruder, and no fan on at all (I'm guessing this could be the problem?) what should I be using? I have a printrbot with PLA and a blue-tape bed on glass.

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