Shrink art (sold under brand names including Shrinky Dinks and Shrinkles) is a craft activity using thin sheets of polystyrene which shrink when heated. The sheets can be cut with standard household scissors, and after heating become about nine times thicker while their horizontal and vertical dimensions reduce to about one-third the original size, resulting in hard, flat forms which retain their initial color and shape.
Shrink art (sold under brand names including Shrinky Dinks and Shrinkles) is a craft activity using thin sheets of polystyrene which shrink when heated. The sheets can be cut with standard household scissors, and after heating become about nine times thicker while their horizontal and vertical dimensions reduce to about one-third the original size, resulting in hard, flat forms which retain their initial color and shape.
Source: Wikipedia "Shrinky Dinks" · CC BY-SA 4.0
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