I've a noob question. After completing construction of the Tarantula printer we tried some ABS .... and that worked ok except the feed was too high... so ..... days later after scraping the ABS off the plate!!! I heated the head to 230c and removed the ABS - and fed in some PLA (that came with the printer) - except that the PLA would not feed... it simply would not go through even if I tried pushing it manually. The sensor is working as it says 230c (I appreciate that is for ABS not PLA).
I've taken off the brass nozzle and it is clogged with grey ABS... but even THEN with the brass nozzle taken off, the PLA simply will not feed through.
I'm at a loss as to what to do next...