Making a mold of a wood positive??

drokkul

Active Hunter
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!!!!
 

yanvaq

New Hunter
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.
 

patiam69

Active Hunter
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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