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Thread: Reusable do-it-yourself molds

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  1. Default Reusable do-it-yourself molds 
    #1
    Join Date
    Mar 2012
    Location
    Cape Coral, Florida
    Posts
    18
    Hey all,

    I'm trying to figure out the best way to create parts for a room in my maze.
    I'm building a giant birds nest out of bones, skulls, misc. body parts..
    My plan is to use spray foam for the actual pieces and I thought that I could use the same parts over and
    over again but I'm struggling with what to make the molds out of...

    Any suggestions??????
     

  2. Default  
    #2
    Join Date
    Nov 2008
    Location
    Mesquite, TX
    Posts
    2,788
    Spray foam doesn't really work well in a mold. it air dries and molds tend to seal the foam. vacufom would be good, or latex bones from a plaster mold (very easy to make a plaster plate mold).
     

  3. Default  
    #3
    Join Date
    May 2011
    Location
    Horrorwood, Karloffornia
    Posts
    2
    your best bet is a silicone brush up mold with a fiberglass jacket. Forget spray foam, try a 5 to 8 lb two part rigid polyurethane foam check out Smooth-on they have all the materials and how to videos!
     

  4. Default Hardware store silicone 
    #4
    Join Date
    Mar 2012
    Location
    Cape Coral, Florida
    Posts
    18
    I watched your U-Tube video on silicone mold...
    How well will that hold up??

    Do you think I could get 5 or 6 plaster heads out of a hardware store silicone mold??

    Also, thanks for all the info, man.. My plan is to build this entire thing myself & your tricks & ideas have been fantastic resources.
     

  5. Default  
    #5
    Join Date
    Nov 2008
    Location
    Mesquite, TX
    Posts
    2,788
    the silicone molds hold up great, i hink I did 10 pulls, but remember mine was open backed.
     

  6. Default Silicone 
    #6
    Join Date
    Mar 2012
    Location
    Cape Coral, Florida
    Posts
    18
    Doesn't seem like it would be impossible to do 2 halves...
    I'm going to try something similar to yours and get the hang of it then I'll try a skull...

    That real stuff is $$$$$$
     

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