Do you know the principle of crazy plastic? Its name may be original but its principle of use is very simple From a simple sheet dedicated to this activity, draw and cut the shape you want in the crazy plastic and pass it to minutes in the oven. Your creation will shrink enormously: this is normal Crazy plastic hardens and loses up to 7 times its size when heated. Create keychains and other small items using this technique. You can use it with markers, colored pencils but also with acrylic paint. A very fun activity to do and watch it transform. The crazy crystal plastic from Diam's is similar to glass and is mainly used with markers. It is very easy to use it as a layer to reproduce the pattern you want. Contains 2 sets of 7 sheets.