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Plaster Molding ?

Discussion in 'Molding and Casting' started by Cory, Mar 8, 2010.

  1. Cory

    Cory Keep an eye on quality!

    I am assuming that if I were to put a piece of fiberglass netting in the middle of my plaster mold, it would stiffen it up quite a bit. Or would small metal screen door material work better? Just wanting to firm it up a bit as to not crack or break when I am using it, and not go to gosh awful thick!
  2. You want something fibrous for plaster.
    Something that allows the fibers to spread out and become saturated with wet plaster.

    Normally fabric like Cheesecloth or Burlap will give you the best strength.

    I normally use burlap.
    I cut it unto squares or strips and soak it in hot water while I mix my plaster.
    then take the squares out and squeeze the water out and place them in the plaster.
    After this I will apply the plaster squares to the areas I wish to reinforce.
    If you are putting it on dry plaster to strengthen it you will need to saturate the dry plaster with water first.

  3. Cory

    Cory Keep an eye on quality!

    Yea, I'm using plaster as if casting the entire fish, both sides and was wanting to reinforce those areas. I believe I will try the burlap solution and see how well it works. Thanks .