I am wanting to make a mold from a bighorn sheep. I was told that brush on 40 from smooth on was a good rubber to use. I was also told to use hs2 rtv from dow corning. The price difference is quite a bit. My question is what do you guys recomend? If you think hs2 is the best where can I get it in 1-5 gallons? For the casting resin I was told smooth cast 326 is a excellent product. I don't mind paying a little more for the more expensive products but is the extra cost worth it? Any help would be greatly apeciated.
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If you are going to be casting more than one or two cast from the mold, then I would strongly advise you to use a silicone as a molding material. Polyurethane casting material are exotherm producting materails an are vary aggressive on the mold. Plus if you use a polyurethane mold material and cast a polyurethane material into the mold,you will need to use a release agent in the mold.This works some of the time but not all the time...so, you could end up with only one cast from your mold and have to make a new mold again. Use silicone as your mold, silicone do not need a release agent.
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