i have tones of fimo clay and if i could ues that it would be easer that going out to get ....what ever other people use
...I'm not positive if Fimo would hold shape well enough. O____o'''' I'm not even sure about the material itself - I just can't see Fimo being a good mold-maker for resin. .__.' I could be wrong, though.
You want to make the MOLD out of clay?! Or the original piece? Making a resin doll isn't easy. You can't just take shortcuts, they will cost you time and money and they will possibly ruin the original piece. You need silicone to make molds. Horribly expensive, but that's the way to go.
Resin probably would cure well enough in fimo, but you'd have a hell of a time trying to get it out of the mold once it was cured. It might stick and it probably would not come out looking very nice, also, I expect that the mold would break. If you could make it work, you would certainly only have one chance at getting it right before you loose the mold. I wonder if maybe you're talking about the fimo product for making push-molds to put fimo into? I'm not sure about that, it is flexible but it's made for one-piece molds, which means it would be flat on one side, not a round object. Also, I don't know how the push-mold material works, if it has any water then you can't use it with resin. Also, when we say 'resin', there are a lot of things that could mean. 'Resin' just means a liquid material that becomes hard. The modern BJDs are made with polyurathane resin, which is not horrible toxic like the kinds of resin that you would find at a hardware store. Anywhere that you would buy polyurathane resin, they would also be selling the silicone to make the molds with.
The answer is yes and no, I can't see what resin wouldn't cure in a fimo mold. You would have to use mold release because resin will stick to a Fimo mold. It might work for a single sided mold for something like a flat back eye maybe, but you would have to stick some kind of handle into your cast because you cant bend Fimo to release the cast. Also it won't seal for a 2 part mold, so you could join two pieces together and pour resin in for a round object such as a leg. Also you're not going to get the truest mold of the pieces, silicone forms around the piece like liquid, but Fimo wouldn't you you wouldn't know if you really had an impression of everything or not till lit was done. Silicone might seem expensive, but you'll get good molds, and if you treat em right they last a good while. If you are planning to make more than one doll you'll love your molds!
Hm, even as a one-part mold, fimo might not be ideal, since it pbb won't give you the control over texture that you might want (esp for ultra-smooth things like eyes). If you're making motifs for furniture, buttons for dolls, swords and shields that will later be covered with metal leafs, fimo (and for that matter plaster, paper clay, etc etc) would work just fine. I think.