Thread: Latex Moulds?

Im having trouble figuring out which part is the mold. Is it the white stuff? Anyway, im not certain how the resin will react with the latex. I think latex is a plastic polymer of some sort. So I think it would be ok. Your best bet is make a test piece and throw some resin on it. If the latex reacts with the resin. I would suggest coating it with some spray on wax or lining it with tin foil. Good luck!

You'll melt the latex, I'm pretty sure. Why don't you use fibreglass to make your mould? It'll be a bit more work, but it's ultra-rigid and better for defining forms. If you're unsure about using fibreglass, you could use plaster for the mould then fibreglass for the final cast

From my knowledge I think latex is pretty flexible. So even if you do spray on some wax it might be hard to fiberglass over it. You could always use some plaster to make a mold of your latex mold. Plaster curing time is pretty quick and it wont react with the latex nor Fiberglass resin.

Originally Posted by grepzen

you ask for help/opinions then argue the responses?

read this slowly:

i dont think hes arguing man. just venting his frustration.

I think it will turn out ok in the end.

Ok, I think I might've misunderstood the latex bit. I can tell you that I have used SILICON moulds before (not cheap) and used a quick casting two-part resin to make some small model parts at uni.
Looking at your pics, it's hard to imagine what you're trying to do. Are you making the original form in filler/glassfibre then taking a mould to create a single final cast devoid of heavy filler?
Isn't latex porous? I'm not sure about latex gloves, but I'm sure they're not simply made of just latex.