There is no way to control a BLDC motor with the PWM found in RepRap-style firmware. Use 100% all the time and be done with it. I've been thinking about hacking together a proper 12V supply + pins to make it possible to use actual PWM controlled fans. 2A DC-DC converter for $15, teeny perf board fo...

I had something similar. Diagnosed it with a taper gauge between the nozzle and a pretty flat MIC6 plate. I just shimmed the middle of the X rail by however much the bed was "high" and that got everything flat. I tried not to loosen all the hardware, though. Left a screw on each end mostly tight so ...

I bought this PTFE tube for a slightly smoother feed tube and it looked exactly the same as the V4 liner: http://www.amazon.com/gp/product/B01CUPV90M/ I only had occasion to notice the liner when clearing a pretty terrible jam. I'll note I didn't use it to replace the liner, since the liner has a sl...

PETG is good stuff, but if you don't want to needlessly buy a roll, you might test your glue on some straight PET first. Most soft drink bottles are PETE (#1 in the little recycle triangle), which should be pretty similar to PETG as far as glue is concerned. Polystyrene (PS #6) should be similar to ...

So it's a weird first post, but I've been running/upgrading a kit-M2 for a school robotics team for a couple years, and lurking the forum for about that long, so.. Automation engineer with C# skills (mostly for HMIs), plus various experience in machining and electronics necessary to get said machine...