ridgid mold material

Can someone suggest the best product for me to use to make a rigid
mold. Also what I will need to keep the casting agent from sticking to
the mold and a weather proof product to do my casting with? Thanks for
any suggestions.

mike spence wrote:
Can someone suggest the best product for me to use to make a rigid
mold. Also what I will need to keep the casting agent from sticking to
the mold and a weather proof product to do my casting with? Thanks for
any suggestions.

Hi Mike,

I have done some moldmaking using poly clay so I can then pour in liquid
plastic to make the final product. I use a silicone RTV (room
temperature vulcanizing) rubber from http://www.jgreer.com/ Look for
silicone mold making rubber. You don't have to follow the exact mixing
instructions, if you add more catalyst it will make the rubber much
firmer (or less makes it more pliable). You can also check
www.hobbycast.net, they sell basically the same stuff only a little more
pricy.