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Robo3D prints Rostock Mini

Discussion in 'Show and Tell' started by Stargrove1, Aug 16, 2015.

  1. Stargrove1

    Stargrove1 Member

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    Hi everybody,

    I own a Robo for about 1 year now and I am still happy with it. But I always wondered how a delta may perform compared to standard printer with the three axis. Since I had some spare parts and unused components like an Arduino, a LCD controller, some motors and some small parts, I decided to built a small delta printer. I compared some of the available designs like the Cherry Pi, Thingystock, Kossel Mini and the Rostock Mini Pro, all of them are great, but finally I decided to go with the Rostock Mini Pro due to it's minimalistic design.

    Some weeks ago I started ordering the components and printing the parts on my Robo in parallel. During the built up phase, I found some points which I wanted to add over the original design like:
    - Add the LCD controller for standalone prints
    - Use a non geared extruder since I had a standard Nema17
    - Add a heated bed (external power required)
    - Include the power supply in the base + cover plate

    Here is the result of my work:

    upload_2015-8-16_14-20-43.png

    upload_2015-8-16_14-21-15.png

    upload_2015-8-16_14-21-37.png

    upload_2015-8-16_14-25-7.png

    upload_2015-8-16_14-25-29.png

    Still some updates to do:
    - Switch to magnetic joints for better precision
    - Control hotend fan to activate over 50°C (like at my Robo, I love this feature)
    - Add better cooling fan
    - Cover at the Ramps board

    But even now, print quality and speed is great, I love my small delta printer as well as my Robo :)

    Have a nice weekend!
     
  2. Mike Kelly

    Mike Kelly Volunteer

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    Great work man. I really want a delta...
     
    Stargrove1 likes this.
  3. Stargrove1

    Stargrove1 Member

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    Thank you. Just build one, I am sure you have also a lot of the required parts just like I did.

    Gesendet von meinem Nexus 4 mit Tapatalk
     
  4. Mike Kelly

    Mike Kelly Volunteer

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    I'll see what I have left over after finishing the mostly printed cnc :)
     
  5. jbigler1986

    jbigler1986 Active Member

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    That is nice. So it's printing fine without a geared stepper?
     
  6. Stargrove1

    Stargrove1 Member

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    Yeah it works quite nice even at higher speed.

    Gesendet von meinem Nexus 4 mit Tapatalk
     
  7. jbigler1986

    jbigler1986 Active Member

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    Interesting. What speeds are you printing at?
     
  8. Stargrove1

    Stargrove1 Member

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    I print at 60mm/s and went up to 150% without skipping a step.
     
  9. jbigler1986

    jbigler1986 Active Member

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    I had nothing but trouble trying to use a non geared stepper with bowden. Kept stalling.
     
  10. Stargrove1

    Stargrove1 Member

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    I use a stepper with 59Ncm, a standard Nema17 has something around 45Ncm. This allows the higher speed.
     
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