Make: Easy 1+2+3 Projects

Sneaky Milk Plastic

By Cy Tymony

You will need

Metal saucepan

Spoon for stirring

Measuring spoons

Strainer

Wax paper

Paper towels

4tsp white vinegar

1c milk

Optional:

Acrylic paint

Cornstarch

Small neodymium magnet

Don’t have a 3D printer to make plastic parts? Use moo juice instead. Ordinary cow’s milk contains a protein called casein. When separated from milk by using an acid such as vinegar, casein becomes a moldable plastic material that can be used to create everything from glue to fabric to billiard balls. Make your own custom parts for projects!

1. Cook the milk with vinegar.

Pour 1 cup of milk into the saucepan and warm it to a ...