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mailbox paper tube moving hand

Discussion in 'Halloween' started by burnt, Apr 20, 2018.

  1. burnt

    burnt Apprentice Elf Generous Elf

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    this something QZ was talking about in chat the other day.

    View: https://www.youtube.com/watch?v=XBqVjAAJFl4


    View: https://www.youtube.com/watch?v=ib-IBGMpgJk


    [​IMG]

    parts used
    the hand was just from a cheap store and the piston bracket was 3d printed.. but could make something out of wood to slide down the tube.
    air piston ----- https://www.aliexpress.com/item/CDJ...32817987661.html?spm=a2g0s.9042311.0.0.AQAj7B
    air solenoid ----- https://www.aliexpress.com/item/4V2...32615978052.html?spm=a2g0s.9042311.0.0.AQAj7B
     
    NTKing(Brad) likes this.
  2. AAH

    AAH I love blinky lights :) Community Project Designer Generous Elf

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    Except for the stroke a central locking solenoid could be used and there'd be no need for air that way.
    The clunk of the air ram could be hidden by a sound effect triggered at the same time.
     
  3. David_AVD

    David_AVD Bite my shiny metal ass! Community Project Designer Generous Elf

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    Hahaha... looks good. :)

    I tend to use car lock solenoids, but the stroke is very limited without using a pivot and lever.
     
  4. OzAz

    OzAz Senior Elf Generous Elf

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    Brilliant @burnt exactly what I envisioned.
    Does that Bracket (green bit) hold everything securely in place OK? I'd been wondering how to secure the mechanism to the tube.
    I've been thinking of using a DC linear actuator for the 'piston' as not keen on having to get into pneumatics
     
  5. OP
    OP
    burnt

    burnt Apprentice Elf Generous Elf

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    it holds it really well.. in your case OZ you could have a longer piston and have more reach. by hiding the back. as for the sound, it only comes from the solenoid which can be placed meters away
     

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