Post
by slamma » Mon May 12, 2014 4:25 am
My MakerGear M2 is experiencing this exact same issue. I've had my M2 for over a year now and have kept it very well maintained and have run many spools of PLA and ABS through it. But at this point, my M2 is basically parked until I get to the bottom of this problem.
This issue didn't crop up for the first 8 months or so. Then finally, one day it started to very infrequently slip like it does in b8smat's video. As time went on, it got worse and worse.
At least in my experience, this is not caused by any of the usual suspects. I've done some pretty extensive debugging to try and resolve this problem.
When it first started happening I purchased a new hot-end, reprinted the filament drive and stepper mount . However it continued. I eventually purchased a whole new heater block, hot end, nozzles, and the filament drive part just as shown on the MakerGear's extruder page. Even after replacing all of this, the problem persists.
I went on to substitute a 0.5mm nozzle instead of the 0.35mm nozzle for the same gcode as a test to presumably lower the amount of force it would need to drive the filament. This did not appear to affect the problem or even the rate at which the extruder stepper was slipping.
I also boosted the current to the extruder stepper and this, albeit surprisingly, also did not make any difference.
My impression is that it can literally only be the stepper itself, the planetary gear reduction on the extruder stepper, or something wrong with the rambo controller board. I've replaced an/or swapped out everything else involved with no impact to the problem.
I was really disappointed after joining the makergear irc channel a few months back and them telling me no one else has had this problem and not able to offer me any useful help or information.
It's good to know I'm not the only one experiencing this problem. Hopefully we'll be able to get resolution finally. I have a suspicion that this is a progressive problem and more people will experience this with their M2 printers as time goes on. I also have a feeling that as b8smat continues to print with his printer, he'll realize his problem isn't solved.
Thanks guys!