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Which casting material should I use? Answered

I have been sculpting in wax and then making plaster or silicone molds to make multiples of some fairly detailed model toys.

I intended to then pour in liquid latex and create wiggly bendy toys, but unfortunately latex doesn't dry inside the molds. It doesn't seem to matter how long I leave them when I open them lost of the latex is still liquid.

I am looking for a replacement. Something durably bendy and low cost that will dry in a mostly enclosed mold. 
Any Ideas?
Please bare in mind I am in the UK. 

Discussions

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Vyger

4 years ago

Mythbusters the TV show uses what they call ballistic gel. It is intended to mimic the consistency and character of flesh so it is jiggly. They mix it up and poor it into a mold and its cures. It's main use for them is to determine if something that they do will cause serious harm. Like a pipe exploding with a person standing next to it. I have no idea where you might get something like that but a search on Google might do it.

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Downunder35m

4 years ago

For the new DLP and Laser 3D printers you can get resin in very different grades of final hardness.

From rigid to soft touch.

They cure with UV light.

Maybe this would be an alternative for you?

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steveastrouk

4 years ago

Latex cures by drying, and as the skin increases, the rate at which it can lose water decreases, and you soon reach impervious. It strikes me your only choice are proper 2 pack polyurethanes, since you are already using silicone moulds.

I always got my materials from Tiranti's

http://www.tiranti.co.uk/