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  1. drokkul's Avatar
    Member Since
    Mar 2006
    Posts
    987
    Jul 6, 2006, 11:33 PM - Making a mold of a wood positive?? #1

    If I'm using wood for my master would a layer (or two) of primer be enough of a sealant to use RTV Silicone and not have it stick into the "pourous" surface of the wood?

    Don't get me wrong... the wood is gonna be pretty smooth anyway, but I believe I've read that wood is hard to mold without it wanting to stick to the mold material.

    If those in the know could reply to this I would be very grateful!!!!
  2. Member Since
    May 2006
    Posts
    42
    Jul 7, 2006, 12:23 AM - Re: Making a mold of a wood positive?? #2

    what about painting the wood with a very, very light coat of epoxy resin? even just wipe it down with it?
  3. CombatBaby's Avatar
    Member Since
    Jul 2005
    Posts
    2,335
    Jul 7, 2006, 10:45 PM - Re: Making a mold of a wood positive?? #3

    couldn't you just spray it with release agent?

    -=QuinN!
  4. yanvaq's Avatar
    Member Since
    Jan 2006
    Posts
    21
    Jul 30, 2006, 4:55 PM - Re: Making a mold of a wood positive?? #4

    I just did this with a Klingon disruptor . What you want to do is coat your wood sculpt with sanding sealer . then the silicon can't get in to the grain of the wood to make it stick or pick up the grain to show in your cast later.
  5. Member Since
    Jul 2006
    Posts
    579
    Jul 30, 2006, 6:21 PM - Re: Making a mold of a wood positive?? #5

    Quote CombatBaby said:
    couldn't you just spray it with release agent?

    -=QuinN!
    That's what I would try.
  6. Gilmortar's Avatar
    Member Since
    Jun 2002
    Posts
    1,747
    Jul 30, 2006, 11:42 PM - Re: Making a mold of a wood positive?? #6

    Polyurethane. You can get it in a spray can at walmart/lowes/home depot.
  7. patiam69's Avatar
    Member Since
    Dec 2003
    Posts
    424
    Sep 4, 2006, 9:33 PM - Re: Making a mold of a wood positive?? #7

    spray it with some clear lacquer and sand it smooth. i know a guy that makes custom fishing works and he carves them out of dowl then seals them with lacquer then molds them with silicone

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