Is there a shelf-life for this product?

I bought this in 2016 and only used a small amount to make a test sample. Last week (early Feb 2022), I used some of it in a 3D printed mold to test the viability of using 3D printing to make molds, using this as the casting medium instead of the mold medium and it worked almost perfectly. This was the first time the two bottles were opened since 2016. So although the RATED shelf life is about 6 months, if kept sealed in a cool place you may find it still usable as long as SIX YEARS later. YMMV, of course, but it speaks to the quality of Smooth-On's products that they remain viable for so much longer than they really should.

Is this product compatible with acrylic paint?

Probably not. It's very flexible as a finished product. While you can probably paint it with acrylic, if the item you are painting is to be moved around or played with, the paint will probably flake off. This item would need to be "Colored" with silicone based pigments. The Rebound is naturally orange in color once mixed, so it will take quite a bit to cover the orange base.

Could I pour this into a plaster mold to make a soft casting of a footprint impression?

Certainly! This would make that soft casting of a footprint very easily. Just remember it is orange in color, so if the end color of your casting is important you will need to add silicone coloring to the base before it sets up.

Can this be casted into a mold?

It might work, but it is not a good choice for casting. It is very viscous, so it would probably trap bubbles , especially if you have undercuts, or anything strange in the geometry. However, every time I have leftover silicone in the plastic cup that I mixed it in, it always makes a perfect negative of the cup when it cures (including the letters in the bottom), so if you have a convex mold it should work.

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🖌️ Mold like a pro, cure like a boss!

EFFORTLESS MIXING - 1:1 volume ratio means no scale needed—simplify your workflow and reduce prep time
RAPID 6 HOUR CURE - Fast turnaround with a reliable 6-hour set time to keep your projects moving
FLEXIBLE DURABLE - Soft, flexible molds ideal for complex undercuts and long-term use in your mold library
HIGH HEAT RESISTANCE - Withstands temperatures up to 450°F, perfect for diverse casting needs
PRECISION BRUSH ON APPLICATION - Self-thickening silicone that clings to vertical surfaces for flawless mold detail

Smooth-On Rebound 25 is a premium platinum-cure silicone rubber designed for brush-on moldmaking. Its self-thickening formula adheres to vertical surfaces without sagging, curing in just 6 hours into a flexible, heat-resistant mold capable of capturing intricate details and undercuts. With a simple 1:1 mix ratio and minimal surface prep, it’s the go-to choice for professionals in sculpture, architecture restoration, and metal casting.

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Brand	Smooth-On
Model Number	rebound25
Colour	Orange
Product Dimensions	15.19 x 20.29 x 7.59 cm; 1.08 kg
Material	Silicone
Special Features	Flexible
Item Weight	1.08 kg

Smooth-On Rebound 25 Brush Platinum Silicone Moldmaking Rubber

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