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norbauer

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  1. Brand new PVA that came with the machine. Doesn't feel sticky. cool. Thanks; I have done so. I will try loading PLA in feeder/extruder #2 when my current print is done, but I don't think it's the material, since the same problem has been happening (albeit to a lesser extent) on the first feeder/extruder as well, where I was using PLA. In both cases the filaments are just the ones that come with the printer. No kinks or bends in the tube. Printing is actually working fine, as the feeder is able to keep a hold of the filament at lower speeds. It's only during that brief fast feed
  2. When loading and unloading, my feeder loses its grip on the filament in the middle (fast) portion of the feeder motion, as shown in this video (make sure you have your sound on, as that's probably helpful to understand what is going on). I have tried all possible feeder tension settings, from one end to the other, and no change to the tension improves or affects the issue. This is for my feeder 2, using PVA filament. Any suggestions for what I can do to troubleshoot this issue? Thanks!
  3. Update: I found that by adjusting the plate with the screws to a distance of 25mm between top of glass plate and bottom of the aluminum build platform, I was able to use manual leveling and then auto-leveling. However, this is a much shorter distance than how how the plate comes from the factory, which is why you get the nozzle crash during auto-leveling if you haven't tightened up the plate screws significantly.
  4. I have the same problem. Nozzles are clean, filament is loaded in both. Before the sensing cycle begins, the nozzle is already in contact with the plate. I've tried it many times, including several times with manual leveling right before auto. Maybe you guys need to revert this change that was pushed in the latest firmware, or make it a bit smarter? The auto-leving was working fine for me a few days ago when I set up the printer, but I think this problem was introduced when I updated the firmware. I'll try the solution provided by @mgammal, but it's a bit of an inelegant hack that we really
  5. OK, thanks guys. This is useful info. I'll do some experimentation with the 20mm limit and turning active leveling off entirely. I'll see what happens and report back.
  6. Yes, of course the leadscrew flexes easily when moved, but there does also appear to be a bit of play in the motor housing like in your video.
  7. I have what seems to be the same problem, a pretty loud and distinct rattling sound. This sounds like a mechanical issue—more like a loose part—rather than active leveling compensation via a stepper motor drive. I can feel vibration corresponding to the sound when I touch the z-axis leadscrew, and as you can see in the video, as you get closer to the z-axis stepper the sound is more pronounced. Is this expected behavior (odd, if so), or should I contact my reseller for service?
  8. I'd love to see a closed build chamber with heat (to reduce warping) and air filtration (for respiratory health).
  9. Interesting. I usually wet sand all plastics anyway. I have heard many people say PLA is relatively very difficult to sand and finish, but maybe they were using dry papers. I need to experiment with ABS vs PLA in my blast cabinet and see how they both respond to it. Sanding with paper works nicely for flat surfaces, but it's tedious and sometimes impossible to get into deep grooves and recesses that way. I guess my question is whether the software (Cura or S3D) account for plastics shrinkage at all in order to try to make the parts more accurate to their designs. Or do most people who
  10. Hi all! I am very impressed by the UM community so far from what I've seen from of your active forum. I have been considering getting a 3D printer for a while now, as I increasingly find myself working on industrial design projects, both for my hobbies (Star Trek prop replicas!) and for commercial projects as a designer, and I'm seeking some advice. I'm both looking for advice on what printer to get (understanding that there will be a strong UM leaning here) and also a bit of advice on what to expect. These are the printers I'm considering: Ultimaker 2+ Zortrax M200 Up Box Her
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