Selfmade plastic for slingshots

Discussion in 'New project ideas' started by G_Y, Oct 11, 2013.

  1. G_Y

    G_Y aiming the less

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    Some people like to build plastic slingshots, other like to mold them.

    Since a hundered years ago they made plastic from milk, also easy to produce at home from warm milk and vinegar (16:1).

    It could have a nice amber look, they made lamps, knobs and combs from. Don't know if the homemade version looks the same, but it is worth a try.

    You may google for “homemade casein plastic" and casein amber.

    This picture is from 1930:
     

    Attached Files:

    Last edited: Oct 11, 2013
  2. zwillie

    zwillie New Member

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    :eek:

    Thanx a lot.
    I just knew the casein glue.
    Zwillie
     

  3. Tilia

    Tilia Junior Member

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    making your own plastic out of milk??

    ill have to try that some time, thnx for this info, im gone use my google-jitsu on that and find out how to do it:)
     
  4. Peterburban

    Peterburban New Member

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    thank you for sharing!
     
  5. Ghosth

    Ghosth Over the hill but still swinging!

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    Interesting!

    Sounds like the finished product can be a bit brittle, so might want to use it to form a handle around a steel frame.

    Still, for the cost of a gallon of milk and some vinegar, being able to mold your own plastic is cool!
     
  6. bigjim

    bigjim New Member

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    Think it is more cheese , what you get
    :)
     
  7. tokSick

    tokSick Senior Member

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    Don' t know if it is hard enough for making a slingshot out of it. I am collecting HDPE bottles but i drink the milk and recyle the bottle. I can tell you, what i get out of it is rock solid.

    Thanks for sharing mate.
     
  8. zwillie

    zwillie New Member

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    We are in the wrong forum. This is for the stinkshotforum. :p
    Zwillie
     
  9. G_Y

    G_Y aiming the less

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    Oops, then my comb was made of hardened cheese and some knobs too ;)


    The smell was better than cheese, really.

    The process is a bit more complicated as putting milk and vinegar together, the casein needs poisonous formaldehyde then. What comes out was used in GB as Erinol, in D as Galalith. In australian army they use it for white knobs.

    As i have seen now the "homemade plastic" without formaldehyde is less durable and baked in oven at max. 80 Celsius.
     
  10. EyAlter

    EyAlter New Member

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    Can you still buy the material from the photo?