Was having trouble with adhesion between PLA and Painters' tape on a heated bed (I still am). So I added a larger raft, resliced and restarted the print, and went to dinner. When I came home, the print had finished..... The only thing salvageable seems to be the barrel. The PTFE still inside it slid right out. Pop in a new piece and try again....This Thing is NOT a work in progress--it's pretty well finished, permanently.... This was an attempt at http://www.thingiverse.com/thing:219024, "Sainsmart 12864 Smart Controller Case" by Tig29 (No offense at OP, it probably prints great when your printer works properly).