by bdring » Thu Jan 31, 2013 5:18 pm
I have always had good luck with the fixed QU-BD extruder and ABS. I initially had decent luck with PLA, but now I am having a lot of trouble it and usually don't get through larger prints.
I heard the rough barrel causes some of the problems, but I polished a brand new barrel and still have troubles. If I run really hot (like 235) I can usually get through a print, but don't get a very good print around horizontal holes and bridges.
Sometimes the filament is stuck and sometimes it pulls out rather easy, but has a notch cut in it. I tried playing with speeds, acceleration and retracts. The upper barrel is cool to the touch and the motor is cool too. I may try to increase the pressure on the idler next.
ABS works fine.
Bart
"If you didn't build it, you will never own it."