Hi!

I am looking for a flexible rubber-like casting/molding material, with a skin color tone similar to the pictures, possibly slightly transparent as I would like to embed elements inside.

Do you have anything that could work? 

Maybe one of the polyurethane resins?

> FAST CAST POLYURETHANE CASTING RESIN

> WATER CLEAR POLYURETHANE CASTING RESIN

Do they need vacuum treatment?

Thanks!

Hi Francesca,

Both our Waterclear Polyurethane Casting Resin and the Fast Cast Casting Resin will cure to a very hard finish and so would not be suitable if you want something flexible. Flexible polyurathanes do exist but we don't stock them at the moment (there are only a limited number of uses for them). We do have a flexible epoxy resin which I've mentioned in response to another of your questions which might be suitable. The EF80 Flexible Epoxy Resin could be pigmented (either fully or partially) using epoxy dispersed pigments (hints of white, red and brown) to make a flesh-tone.

I think you would need to degass the EF80 in order to achieve a bubble-free water-like appearance.

An alternative, suggested by Manu which hadn't occured to me would be that you might be able to use RTV silicone rubber for this purpose, especially if you really do want it to have a good amount of flex. Our Addition Cure RTV Silicone Rubber is almost clear (just slightly cloudy) so you could certainly pigment it to be flesh-toned. You would need to degass the silicone to remove trapped air bubbles and give it a good, clear, waterlike appearance. To degass the silicone you would need a vacuum pump and a vacuum degassing chamber.

I hope this helps.

Matt

Matt Statham
Easy Composites / Carbon Mods - Technical Sales