I set out printing the 5mm calibration blocks to fine tune my E-steps for the polycarbonate filament according to the wiki here: [
reprap.org]
The model has a couple small birdges and I realized while calibrating the E-steps that I can't get it to bridge really at all, without anything to lay onto the material just seems to ball up on the nozzle. It'll lay one trace correctly but as soon as it goes back the other way it'll rip it up and the rest is just a ball of molten PC getting dragged around. If it could somehow be programed to lay a trace at a time and wait in between to cool it might work, but I'm not sure that's possible without messing with the G-code.
I'm printing at 280C. I tried speeds from 10mm/s to 60mm/s and tried messing with the bridge flow ratio, from 0.8 to 1.2, nothing helped. I don't have a cooling fan setup yet, it's in the mail, maybe this will help I'm not sure, but I've had no issues with ABS or PLA bridging on the 5mm calibration block model.
Has anybody had success bridging with PC and what settings did you use if so?
