Science Gizmos: Shrinking Plastic Sheets.
These Science Gizmo ‘Shrinking Plastic Sheets’ will shrink in the oven (with adult supervision) after making your own creative designs like key fobs, zipper pulls, window ornaments just to name a few.
Pack contents include:
- 50 sheets of Shrinking Plastic,
- 100 loops for keychains or zipper pulls,
- One sheet of fine sandpaper,
Works well with permanent markers.
To use with colored pencils, first “scuff” the sheets with fine sandpaper beforehand.
(NOTE: Brand may vary from image displayed)
[Wikipedia excerpt: ‘…Shrinky Dinks (also known as “Shrinkles”) is a toy and activity kit consisting of sheets of polystyrene which can be cut with standard household scissors. When heated, the cut shapes 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. They reached the height of their popularity in the 1980s. Most sets are pre-printed with outline images of popular children’s characters or other subjects, which are then colored in before baking. Shrinky Dinks were invented in 1973 by two housewives Betty Morris and Kate Bloomberg of Brookfield, Wisconsin, as a Cub Scout project with their sons. The first kits were sold at a local shopping mall and became very popular. Shrinky Dinks were soon licensed to be manufactured by the major toy companies of the time such as Milton Bradley, Colorforms, Western Publishing and Skyline Toys. The shrink plastic is still available from many retailers and can be used for a variety of things like charms and pins. The base material consists of thin, flexible polystyrene plastic (#6) sheets. Prior to heating, the plastic sheets can be colored with felt-tip pens, acrylic paint, colored pencils, etc. and cut into shapes. However, oily or waxy substances (such as cheap colored pencils,[clarification needed] crayons or oil paint) are not suitable because they melt or burn in high heat. When heated with the Easy-Bake Oven, a conventional oven, or a heat gun, the plastic shrinks and becomes thicker and more rigid .…..’ ].