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umagi

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  1. Hi Lars. Thanks. Yes, I finished it! It works fine, but the whole 3D printing process is too slow for my liking (and I get bored quickly). So, for the moment, I am focusing on other stuff.
  2. Version 1.0

    1,894 downloads

    In order to check the quality of my bed leveling (seem to have trouble when printing close to one edge of the bed), I made this mount for my digital dial indicator. Initial measurements seem to indicate that my 6mm shafts may be bent somewhat. Since my dial's shaft is too short, I used an extension shaft salvaged from an old CD-ROM player, together with one of its slide bearings. First, I was hoping to be able to use the unused nozzle opening to pass the dial shaft (or its extension part), but unfortunately, I couldn't find an easy way to secure the slide bearing to firmly hold the extensi
  3. Version 1.0

    1,278 downloads

    I made this to prevent the bowden tube from popping out of the feeder. For some reason on my self-built printer, this usually happens during the print of the first layer (starting with the brim). Since the tube is pushed out with quite some force, I resorted to this design, which combines the function of the shoehorse clip (to lift the ring fitting) and of a 25mm clamp, which squeezes the bowden tube to hold it firmly in place. The design is for a 4mm external diameter bowden tube (1.75mm diameter filament).
  4. Changed to 16 steps for the Z by installing the jumper on JP3, and the "resonant" noise when the Z shaft moves up and down (homing and to Z=0) have basically gone. However, my Ulticontroller board has again failed, and again, it's the U3 chip that has blown with a very visible burnout hump on the chip. I really start to believe this Ulticontroller design is flawed big time!
  5. Exactly what I needed to know. In the link you provided above, it seems that changing to 16 steps may reduce some of the Z axis noise, so I will give it a try. Some people in that post speak of resonance effects, and I believe my custom UM2 build may suffer from it as well, especially since it is even taller than the UM2 extended. My construction is build around an 20x20 aluminum extrusion frame and covered with 4mm composite alu panels. The Z max is 435mm now, and to stabilize the bed somewhat, I have attached flange bearings also below the bed. These bottom bearings also serve as suppor
  6. Hi, On the Ultimaker 2 main board is a jumper JP3 "8/16 step". What does this do? If this sets the microstepping mode, why is there only 1 jumper and not one for each stepper motor? If it is used, does the open state (no jumper installed) mean 8 or 16? Thanks!
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