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CNC Sand and Spraycalk drawmaschine

Discussion in 'Other Builds' started by kallibaba, Mar 25, 2017.

  1. kallibaba

    kallibaba Journeyman
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    kallibaba published a new build:

    Read more about this build...
     
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  2. 3DMON

    3DMON Journeyman
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    Very cool!
     
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  3. MaryD

    MaryD OpenBuilds Team
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    This is neat.
     
  4. kallibaba

    kallibaba Journeyman
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    Thank you.
    The machine now runs with a revised sand valve without problems with 10 meter long texts and drawings.
    The spray head for the chalk is not yet finished.

    When this is finished I will publish all the plans and the postprocessor adjustments.
     
  5. Mark Carew

    Mark Carew OpenBuilds Team
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    Well done! this is really cool :thumbsup:
     
  6. eumo

    eumo New
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    Hello! would it be possible to have more information on how the machine works?
    I'm developing a drawing machine on wheels too and this would be super helpful!
    thank you!!
     
  7. Ariel Yahni

    Ariel Yahni Veteran
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    You got me at CNC Sand. Well done and i want one
     
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  8. kallibaba

    kallibaba Journeyman
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    Hi folks, which is actually electronics is actually very simple.
    The machine runs like all my drawing machines with GRBL on an Arduino Nano which is loaded from a Raspberry 3 or a Raspberry Nano W with the Universal Gcode transmitter.
    This is then simply controlled via Wlan via VNC.

    Really tricky is the tuning of the sand flow. I have now made various outlet nozzles for the sand which are exchangeable with M12 thread.

    In the next few days, I will make and publish photos, detail photos and videos.

    Still something to my bad english .... unfortunately I am linguistically very untalented and must understand it at all Google Translate Translate.

    A GUI with a few nice features is conceived only I have unfortunately still no coder for it.

    But I stick to it :)

    At the moment, the control is as on any CNC portal milling machine.

    Something then vectorize through a CAM with a slightly modified postprocessor and then to the sand drawmachine.

    X and Y, Z controls the flow of sand.

    The valve for the sand is a rotary valve made of POM (Delrin) milled from a block (okay with the Protype I am still with the file and the drilling machine) with a POM cylinder which turned and for the actual valve opening still with the hand Has been reworked.
     
    #8 kallibaba, Apr 5, 2017
    Last edited: Apr 5, 2017
  9. silopolis

    silopolis Well-Known
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    Superb idea and nice build !
    Would love to see it draw with seeds !... ☺️
     
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  10. Mark Carew

    Mark Carew OpenBuilds Team
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    Really turned out nice @kallibaba looking forward to seeing the plans and the postprocessor! :thumbsup:
     
  11. Gary Caruso

    Gary Caruso Veteran
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    Wow! really nice I want one!
     
  12. Ariel Yahni

    Ariel Yahni Veteran
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    This is so awesome, i love it. Can you share a little about the valve you used? Also would be nice to get the electronics used :)
     

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