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Kinetic Sand: 98% Sand, 2% Silly Putty Ingredients

Posted on
October 01, 2013


This is a video demonstration of Kinetic Sand, a sand play toy made from 98% sand, and 2% Polydimethyl siloxane, a "silicon-based organic polymer...particularly known for its unusual rheological (or flow) properties." It makes the sand act...weird. Also, at $45 for 5kg (~11 pounds) of Kinetic Sand, it sounds like either polydimethyl siloxane is really, really expensive, or somebody's price gouging. Just saying, I'll sell you a bag of cat litter mixed with paint thinner for $10. It might not act the same, but neither will your kids after they eat a handful.  

Source (Youtube)

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