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  • Field of Work
    R&D / Exploration
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  • 3D printer
    Ultimaker 3 Extended
  1. gr5, Thanks for the advice. It was the axial fan. The fan was actually good, it had gotten some spider web size bits of filament rapped in the blades. After a bit of cleaning it went right to work. Thanks again.
  2. Looks like it may be the fan. I will replace it and try again.
  3. Just finished both Hot and Cold Pulls, the same thing happened. I even put in a new bowden tube. I will try a new hot end next, but I am not expecting a change. All suggestion are appreciated.
  4. I have started this part 4 times now and it does the same thing every time. The brim goes down like a champ and then when it starts the criss-cross pattern I start to see small bits of under extrusion. The spots get progressively worse until extrusion stops all together. I unload the filament, if I am lucky. Most of the time I have to take the extruder apart and reload. You can see in the other 3 attached pictures what I end up with. The hot end is always a little fatter with a bulge right at the spot where the filament leaves the bowden tube. The next two pictures show the filament where the extruder fails to feed but then does okay for a bit (the out of focus picture) and the last picture is of the spot it leaves when it gets stuck for good. I have cleaned the extruder, changed filament (currently have a brand new role on), checked my level, checked the tension on the extruder feed wheel and tried leaving the door open and closed. I get the same result every time. The last two parts of similar size came out just fine. I also attached the profile I am using. Any help would be great. This part not printing is holding up a big project. Thanks, Jon PLA 09102018 1.5mm.curaprofile
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