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Abrasive

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  • Field of Work
    Engineering
  • Country
    US
  • 3D printer
    Ultimaker 3

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  1. Will the logs still contain relevant data if I restarted after the problem happened but before I dumped the logs?
  2. I also used the stepping stone firmware to get to 5.2. Mine has the bugged screen which seems to drift along the X and wrap around like the above picture. My printing still works, however every once in a while during a print it will pause for a few seconds and keep extruding in one spot making a bump, like there is some contention for resources and it just derps out.
  3. I just did this test and my hydrophylic side was on the opposite side of the sticker. It was definitely obvious as one side the water stayed contained and the other side it kept spreading slowly. So I guess I have been using the wrong side of the glass but it has been working well for me with no extra adhesives? Or is the information in the original post reversed?
  4. Couldn't you just buy a cheapo router and set it to a static IP address on the current network and then plug only the Ultimaker into that router and set a static lease for the MAC address to the correct IP address? That way it received the IP from DHCP and is guaranteed to be the same IP address every time.
  5. Doesn't look like PC is compatible with the breakaway support based on their compatibility matrix: https://ultimaker.com/en/resources/49799-material-compatibility In my personal experience PC printed very well using PC as the support material.
  6. What were you using the CC core for in this example? I didn't see any materials mentioned so I'm not sure what was accomplished.
  7. Does it need to be a 3D texture? It looks like Meshmixer can do 2D textures applied to 3D models to some degree which you could then load the textured model into Fusion 360. https://forums.autodesk.com/t5/fusion-360-design-validate/using-a-bump-map-to-add-texture-to-a-machined-plate/td-p/6453429 https://knowledge.autodesk.com/support/fusion-360/getting-started/caas/screencast/Main/Details/f1a39d8d-c09c-460a-b27e-05f5d8fa7a46.html
  8. Any way I could donate polycarbonate part(s) for this testing? I'm really interested in how the different materials compare. As far as Onyx printing I have heard through the combat robot community that Endbots is quite reasonable for commissioned Onyx prints.
  9. What is the Izod impact strength of Xstrand and what is its specific gravity/density?
  10. I wanted to take existing parts I had an make a mold for them to make them from PCL. I decided to try Cura's experimental mold feature, but it seems completely backwards to me. When I think of a one part mold I think of it like a bath tub where you'd fill it from the top and let it cure. Cura seems to force it to be an upside-down bathtub no matter what so the only way it could be useful is if you use supports. Removing the supports would cause the mold to be quite rough, unless you use PVA. Mandatory use of PVA seems over complicated and expensive though. Am I using this feature incorrectly? If not is there a way I can invert the whole mold? I can't just rotate it 180 degrees because then it reslices putting a new ceiling on top.
  11. Is there any impact strength test data for this material? The data sheet doesn't appear to have that data.
  12. I used polycarbonate for a weapon adapter for the combat robot and it held up. The weapon blade screws into the bottom of the adapter and the brushless outrunner presses into the top. CAD models shown in the attached pictures. I could't use flexible filament as it needs a fair amount of rigidity. I was skeptical that it would work as it is spinning at a few thousand RPM. I thought the screws would split it under the torque during impact, or it would just explode. The adapter I made is on Cubey's Revenge, the taller tube robot with big blue wheels. This is one of the more violent fights and it didn't break. I'm going to iterate on the adapter some more and experiment with 3D printed wheels that can hopefully survive horizontal spinners. Flexible filament might work well for the wheels, I just need to keep them under 14g or so.
  13. That's a cool chart! I guess looking at the chart I would expect the transparent PC to be better for a combat robot but in reality it is significantly worse. I guess I would need to look at an impact strength graph to be able to visually gather that info?
  14. Interesting, according to the TDS the mechanical properties of the transparent is at least slightly higher in every category except impact strength, which it is much less: 4.1 kJ/m² (t) vs. 14.9 kJ/m² (b/w)
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