edkoch 0 Posted March 25, 2016 in Ultimaker 2 Extended - Feeder keeps skipping (edited) Feeder keeps skipping Model: Ultimater 2 Extended Hey guys, I'm a little bit confused. After hours of printing suddenly the feeder of my Ultimaker 2 Extended started skipping: Video: https://drive.google.com/file/d/0B7KyR2ULRkeQa3U3VW1INGg1bms/view?usp=sharing What I already tried: --> doesn't skip, when the hose is not inserted changed nozzles changed the hardness of the feeder Have you got any ideas to help me? Because actually this skipping causes the feeder to not transport the filament fluently, so that the prints come out bad. Thank you Werner Koch Edited March 25, 2016 by Guest Share this post Link to post Share on other sites
gr5 897 Posted March 25, 2016 in Ultimaker 2 Extended - Feeder keeps skipping (edited) This is very common. The stepper motor can only push so hard - about 5kg of force. There can be many causes but seeing the incredible speed of that motor I'm guessing you are just printing too fast. The hotter the filament is, the less viscous it is. So at 190C the filament is more like toothpaste and at 240C PLA is more like honey. Did you change to a smaller nozzle size recently? Did you change filaments recently (some PLA needs higher temperature)? Is it possible you are now printing ABS and before PLA? Check all the printing speeds in cura - especially the infill speed (which should be zero): Here are my recommended top speeds for .2mm layers (twice as fast for .1mm layers) and .4mm nozzle: 20mm/sec at 200C 30mm/sec at 210C 40mm/sec at 225C 50mm/sec at 240C The printer can do double these speeds but with huge difficulty and usually with a loss in part quality due to underextrusion. Different colors print best at quite different temperatures and due to imperfect temp sensors, some printers print 10C cool so use these values as an initial starting guideline and if you are still underextruding try raising the temp. But don't go over 240C with PLA. What is your: print speed, nozzle size, layer height, printing temperature? Material? I want to see if you are within expected printing speed range. Edited March 25, 2016 by Guest Share this post Link to post Share on other sites
