ABS not feeding

I just switched from PLA to ABS for the first time, and I seem to be having a lot of problems with the ABS not wanting to feed. I changed the tension both tighter and looser and it had little/no effect.

I'm using 1.75mm Octave glow in the dark ABS

Any ideas/suggestions?

I can't say for certain, having got only poor feed with glow in the dark PLA, but I came closest to getting something reasonable with the hot end a lot hotter than I was comfortable with: I used 230 degrees instead of the 210 which seems to be the sweet spot for other PLA filaments. It may be worth trying with the ABS.

If you are already at a high temperature, it is possible that the PLA in the hot end has denatured and partially blocking the nozzle - if so, try running a suitable drill bit down the hole.

Mike

From what I remember, I read that you have to loosen the two bolts at the extruder when you use ABS, because this filament is softer than PLA.