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waterfall printer

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by kagan09, Dec 17, 2010.

  1. 4pyros

    4pyros Well-Known Member Most Helpful Member

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    Polarity? Solenoids dont work off polarity. You will need a spring.
     
  2. KMoffett

    KMoffett Well-Known Member

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    Do you know that unless the plunger in the solenoid is a magnet, you can't reverse the motion by reversing polarity?

    Ken
     
  3. Khalid1349

    Khalid1349 Member

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    "To invent, you need a good imagination and a pile of junk."
    unfortunately, that pile of junk is not available her;)
     
  4. dave

    Dave New Member

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  5. 4pyros

    4pyros Well-Known Member Most Helpful Member

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    OK use someone elses junk. Try a junk yard and get some fuel injecters. You may be able to modify them to work.
     
  6. chadchawaii

    chadchawaii New Member

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    I will use a spring, instead of pushing an opposite polarity
     
  7. julfi

    julfi New Member

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    Hi!

    i have done this project for my final thesis. here is a video
    http://www.youtube.com/watch?v=rEOaEgPAHhA

    I built the valves on my own, cause it was the cheapest way. I collected a lot valves from washing machines, at every scrapyard around knows me now:D
    As i found the valves werent acurate i put them appart and i keept the electromagnets.

    If you look how a valve is working you see that beside electromagnet you need the piston and some gasket. I have replaced the piston with a metal stick of 10cm. On one side of the stick is elmag, the other side is laying(filling) the hole(nozzle). Vertically.

    Between elmag and nozzle there is water, you should build a tank that support elmagnets on top. When elmags are not energized, the stick(with some gasket) is laying(gravity) on the holes and water is traped. Once energized, the elmag lift the stick and the water is free to pour out.

    Is working as fast as the elmags can energize so like using real valves. All you have to do is put all this around a nice tank :p
     
  8. 4pyros

    4pyros Well-Known Member Most Helpful Member

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    Nice Job. Do you have any pictures showing the valve assemblies?
     
  9. julfi

    julfi New Member

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    sure, this is from sketchup. Is really simple and you should update it if you want to sell as a product. Market inspector wont be really happy with such clamzy implementation, but you have an idea now;)
    View attachment 64215
     
  10. chadchawaii

    chadchawaii New Member

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    I've seen the previous design and I think it can be done quicker, with the absence of a screw-down. I'm only interested in a gated "plunger" and a spring.
     
  11. julfi

    julfi New Member

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    Dont forget to show some pics :eek:
     
  12. strantor

    strantor Active Member

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    Very cool!.
     
  13. cr0sh

    cr0sh Member

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    That doesn't look much different than what I had originally suggested many, many moons ago:

    http://www.phoenixgarage.org/show_article/116

    Glad to see someone got something to work from junk, however they did it! Great job! :D
     
  14. ghostman11

    ghostman11 Well-Known Member

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    i have looked at loads and loads of theese vids all the ones that work seem to have height and short valve nozels in common. i realy dont think Khalid was that far off, like was mentioned a few times by others i think the main problem was the plastic tubes and the lack of hieght.
    do you still have the valves khalid?
     
  15. chadchawaii

    chadchawaii New Member

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    what if you want to keep the valves open for an extended period of time?
     
  16. Mosaic

    Mosaic Well-Known Member

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    How about pistons made with ball bearings ( to seal a round hole well) soldered to suitably sized bolts?
     
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  17. 4pyros

    4pyros Well-Known Member Most Helpful Member

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    Not shure what you are trying to say.
     
  18. 4pyros

    4pyros Well-Known Member Most Helpful Member

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    You should be able to or you can pulse it.
     
  19. PSSF84

    PSSF84 New Member

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    Hi,

    I want to do something similar to this but don't know what solenoids to use... can you share your solution julfi ?
     
  20. Inquisitive

    Inquisitive Super Moderator

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    julfi was last seen:
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