jafenske wrote:One more question about the MK7. I've noticed that most extruders have a spring to keep the filament next to the drive gear. How does the MK7 do that?
alwayswill wrote:jafenske wrote:One more question about the MK7. I've noticed that most extruders have a spring to keep the filament next to the drive gear. How does the MK7 do that?
I'm running a Mk7 and the thing in the link below is what I am currently using to print 1.8mm ABS and PLA filament...
http://www.thingiverse.com/thing:15718
-Will
JeremyBP wrote:So I got my thermocouple amplifier built tonight. It actually integrated very easily with RAMPS, which was a pleasant surprise. I did about 30 cm of test extrusion, and so here are my initial thoughts. The mk7 really does not want to go as fast as I had hoped, and certainly does not go as fast a the ord bot is capable of going. But it's plenty fast. The motor current had to be set higher than I would have thought to keep it from skipping steps, but I can run it at 275 mm/s. With a little tweaking and testing I'm sure I can make it go higher. For thin layers, that should be more than enough speed. Tomorrow, I'll see about fixing my camera and getting some pictures and video.
motor is actually running intermittently, in little pulses
bdring wrote:That is the exact symptom of the driver overheating.
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