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Prusa i3 (Acrylic frame with OB rods)

Discussion in '3D printers' started by dddman, Feb 6, 2015.

  1. Robert Hummel

    Robert Hummel Custom Builder
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    Yes I made them 10mm so the 3/8 rod would fit for any builders that can't aquire 8mm rod :)
    I will take some pics tonight when I get home from work
     
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  2. Mopar32985

    Mopar32985 Well-Known
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    Thanks @ddman appreciate it!!!!
     
  3. Robert Hummel

    Robert Hummel Custom Builder
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    Lol nvm
     
  4. Mopar32985

    Mopar32985 Well-Known
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  5. dddman

    dddman Journeyman
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    I know that Robert has an iPhone... which could explain the picture quality :p But ribbing is inherent to 3D printing as it is a layering technique. You can have more or less depending on your settings, but it won't ever be perfect. I have to find a macro lens for my Nikon to show some close up pictures of the ribbing at different settings. Also, my printer isn't perfectly calibrated.
     
  6. Robert Hummel

    Robert Hummel Custom Builder
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    Here is a reg and macro pic, you will always have some sort of ribbing the trick is to get it to a min.
    This is .2 layer
    image.jpg
    image.jpg
     
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  7. Mopar32985

    Mopar32985 Well-Known
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    Wow man thats a great print well done!!
     
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  8. Robert Hummel

    Robert Hummel Custom Builder
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    $15 iPhone macro lens ;)
     
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  9. Mopar32985

    Mopar32985 Well-Known
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    Another quick guestion on the y axis the bearing blocks are hitting the acrylic frame any input. I just mocked it up really quick to test and it hits just a little. 20150411_173854.jpg 20150411_173847.jpg
     
  10. Robert Hummel

    Robert Hummel Custom Builder
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    You have them backwards the screws face out with the frame you have ;)
     
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  11. Robert Hummel

    Robert Hummel Custom Builder
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    Man that blue and yellow looks good
     
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  12. Mopar32985

    Mopar32985 Well-Known
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    Thanks man i figured it was something small like that
     
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  13. Mopar32985

    Mopar32985 Well-Known
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    Ok so i flipped the the y bearing blocks and im still having the same problem any advice 20150411_212351.jpg 20150411_212406.jpg 20150411_212423.jpg
     
  14. dddman

    dddman Journeyman
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    Do you have a file somewhere?
     
  15. Mopar32985

    Mopar32985 Well-Known
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    O yea i can def do that just want to make sure im not doing anything wrong
     
  16. Robert Hummel

    Robert Hummel Custom Builder
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  17. Robert Hummel

    Robert Hummel Custom Builder
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    I'm using the OB 12v 30 amp power supply.
    I gave up on taking chances, yes in the end you save a buck, but quality control is not there.
    Yes all the power supply's are from china but there is a reason I don't have issues with the OB ones.
    When a customer is buying large amounts the best of what a supplier has will always go to them before the one unit sale on eBay that leaves you helpless and spending more.
    I think you have a bad supply, the voltage should not be dropping that low.
    How do you have things wired?
    Are all power leads on one output of the supply? Most have three output terminals.
    I myself use an output to power one item each, bed on one, extruder on the next fans and other stuff on the the last
     
  18. Robert Hummel

    Robert Hummel Custom Builder
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    Yeah for sure 10v is a big drop, is there a reason for the external relay?
     
  19. Robert Hummel

    Robert Hummel Custom Builder
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    What type of relay is it?
     
  20. Robert Hummel

    Robert Hummel Custom Builder
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    Just wonder how many amps its taking to keep the relays engaged.
    Whats your voltage like when only using the motors powered, no heat bed or hotend.
    Have you any way to measure the amp draw? Are you sure your not exceeding the 30 amps?
    Are you using all the same electronics as before with only changing the power supply, I'm sure you have thought of these things but I'm just trying to narrow the issue done so you don't waist more flow
     
  21. Mopar32985

    Mopar32985 Well-Known
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    Well made some good progress. Im trying to fight the urge to rush and make the wires clean. What are you guys using to route wires from extruder to ramps and keep it clean. Sorry for large pictures 20150412_141936.jpg 20150412_205453.jpg 20150412_205501.jpg 20150412_230511.jpg
     
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  22. Robert Hummel

    Robert Hummel Custom Builder
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  23. Mopar32985

    Mopar32985 Well-Known
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    So the same stuff im using. That gives it enough supportand keep it out of the way. I was also looking at the spiral cut plastice wire loom.
     
  24. Robert Hummel

    Robert Hummel Custom Builder
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  25. Mopar32985

    Mopar32985 Well-Known
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    Alright so all the electrical is done now just need to install the belts and upload the code to the ramps. Do you have a link or file of the code? its been a long time how do you upload the code again do you just upload in arduino software? Thanks really excited to get this going hopefully tonight or tomorrow night
     
  26. Robert Hummel

    Robert Hummel Custom Builder
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    Yes you download Marlin and use the arduino software to change settings and flash to the ramps setup.
    https://github.com/MarlinFirmware/Marlin

    Slic3r
    http://slic3r.org/download
     
  27. MCSCODER

    MCSCODER New
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    Most Computer power supplies do not have the capability of supplying the amps that the bed needs to heat up, You will be better of hacking an XBox 360 power supply, use the 203 Watt version, same one I use for a dedicated power supply for my bed, and the rest is powered off of a computer power supply.
     
    #117 MCSCODER, Apr 13, 2015
    Last edited: Apr 13, 2015
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  28. Robert Hummel

    Robert Hummel Custom Builder
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  29. Mopar32985

    Mopar32985 Well-Known
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    Aright guys have the OBi3 moving but i cant get the endstops to work is there something i can change in code. Even if im in pronterface and hit home button it does nothing. I can move the axis when i use the arrow keys in pronterface but also does nothing when the endstops are hit. When i depress then the led light does light up. @Robert Hummel would it be easier to just get your file since mine is the same im also using smart controller
     
  30. Robert Hummel

    Robert Hummel Custom Builder
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    Yeah will save May Marlin and upload a file for ya
     

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