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celso

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  1. Thanks Daid. Will give a it with different retraction settings and slicers, like Cura.
  2. Hi, Help the newbie please. I'm struggling with trying to find the optimal settings for a Slic3r (latest 0.8.2 version) profile. I'm using this pyramid object to help me with the calibration (see attach). Yes, I've tried the E steps procedure too. No matter the settings I have, my objects always end up with this strings of plastic connecting distance spots, extruded incorrectly when the head travels. First I though the temperature was too high (I'm using PLA) so I decreased it progressively from 200 to 175. Nothing. Then I tried to increase the retraction length setting. No major improvements either. I've also tried different speeds. I'm now printing very slowly (30mm/s for permitters, 60mm/s infills) and I increased the travel speed to 150mm/s. Nothing seems to help much. From your experience, what do you thing is the main reason why the extruder drops so much plastic when the head is traveling? What settings should I experiment with? Thanks!
  3. Hi, I've done a time-lapse video of the whole assembly process, including the first 3D print. Thought you'd like to watch it, I think it's pretty neat http://arrifana.org/blog/2012/05/ultima ... timelapse/
  4. I'd love to print the tensioner, if I had a 3D printer Anyway, maybe I can put enough tension on it so that it works, and then I can print the thingiverse tensioner.
  5. I'm now in step 4. Two things are bugging me with step 3 though and I'd appreciate some comments from the community or the UM team before I proceed. 1. One of the timing belts is too loose. The long one on the back axis. I know I'm supposed to adjust its tension later, but I don't think the sliding block can tighten it that much. This worries me. 2. I was playing with the axis and the belts at the end and it seems that the front axis has much more friction resistance than the other 3 axis, which results on having to use much more strenght to move in Y direction than in the X direction. I can feel it with my hands. I thought that one of the bearings could be in touch with the endcap but I checked it, and it's not. Could it be internal friction on the bearing itself? Any hints on this? Many thanks!
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