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View Full Version : Reusable do-it-yourself molds



Laughing Jack
04-11-2012, 05:01 PM
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??????

Allen H
04-11-2012, 06:05 PM
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).

http://www.youtube.com/watch?v=yEKEJDpUvkw

Ralis Kahn
04-12-2012, 05:10 AM
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!

Laughing Jack
04-12-2012, 12:03 PM
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.

Allen H
04-12-2012, 02:20 PM
the silicone molds hold up great, i hink I did 10 pulls, but remember mine was open backed.

Laughing Jack
04-13-2012, 04:00 PM
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 $$$$$$