Problems and severe underextrusion on new M2 Rev E
Posted: Thu Dec 21, 2017 2:03 am
I got a new M2 Rev E a few weeks ago and I've had a bizarre underextrusion problem that I haven't seen anyone else document (I've pretty sure I've read every extrusion related thread in this forum and other printer forums). When printing a thin 20mm wall cube (Slic3r Prusa Edition, 0.2mm layers, 30mm/s print speed, 210C, MakerGear Black PLA, 1 perimeter, no top/bottom/infill), I expect a wall thickness of about 0.39mm. However, when I measure with a caliper, I get 0.24mm consistently. The layers don't adhere very well either.
Things I've already done:
- Leveled the bed using the M2 Quick Start
- Unclogged the nozzle
- Used a new 0.35mm MakerGear nozzle
- Adjusted the extruder tension so that the bite is ~15% depth and the filament is still round
- Calibrated the extruder (more below)
I noticed some odd behavior while calibrating the extruder. I measured out 100mm and printed 100mm, but each time I did this, it would print a different length (sometimes differing by up to 20mm). The weird thing is that I don't hear any clicking from the extruder motor to indicate skipping. I've also taken off the extruder fan to watch the if the shaft is slipping inside the filament gear but it isn't. I really don't know what else to try at this point. I'm really just disappointed with the M2 because I assumed it would mostly just work out of the box, but I've already spent 30+ hours troubleshooting an expensive, new machine.
Things I've already done:
- Leveled the bed using the M2 Quick Start
- Unclogged the nozzle
- Used a new 0.35mm MakerGear nozzle
- Adjusted the extruder tension so that the bite is ~15% depth and the filament is still round
- Calibrated the extruder (more below)
I noticed some odd behavior while calibrating the extruder. I measured out 100mm and printed 100mm, but each time I did this, it would print a different length (sometimes differing by up to 20mm). The weird thing is that I don't hear any clicking from the extruder motor to indicate skipping. I've also taken off the extruder fan to watch the if the shaft is slipping inside the filament gear but it isn't. I really don't know what else to try at this point. I'm really just disappointed with the M2 because I assumed it would mostly just work out of the box, but I've already spent 30+ hours troubleshooting an expensive, new machine.