Casting Material - Flexible/Bendable?

Jesuit24

Well-Known Member

RPF PREMIUM MEMBER

• Aug 19, 2017

• #1

I'm planning on sculpting a lifesize Baby Groot, but I want the ability to bend the limbs and hold their new shape until I reshape them (think go from standing to sitting on a whim without it slowly reverting back to the original shape). What could I use for this purpose? It would need to be paintable and (ideally at least) moulded in regular RTV silcone since I have some on hand.

 

cavx

Master Member

• Aug 19, 2017

• #2

Flexible polyurethane might work. But you would need to embed wire if you want to bend it and have it hold it's shape.

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Jesuit24

Well-Known Member

RPF PREMIUM MEMBER

• Aug 19, 2017

• #3

Is that a foam? Can it be painted?

 

cavx

Master Member

• Aug 19, 2017

• #4

Jesuit24 said:

Is that a foam? Can it be painted?

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No, more of a high shore rubber. The stuff I use is A65 clear and can be pigmented, so there is no need to paint. If you need to add details like eyes, I am sure you could paint those or, if you are really brave, mix a small amount with black pigment and lay in the eyes.

 

Jesuit24

Well-Known Member

RPF PREMIUM MEMBER

• Aug 19, 2017

• #5

I've been looking at reference shots and the colour seems pretty uniform, so pigmenting might actually work. Only difference in colour seems to be mossy areas on the head and in the recesses where it's much darker. Do you think the rubber would take washes/inks and glue for scenery moss/flock?

 

cavx

Master Member

• Aug 19, 2017

• #6

When I was planning on making MAG midsoles, I was going splatter the inside of molds with aqua, let that set up and then back fill with grey. Means I wouldn't have to paint.
I guess you could do the same with darker grey, green or even black.

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