Gak is made by combining white glue, powdered Borax and water. Gak, sometimes called slime, goop or oobleck, is a slippery, putty-like material that behaves sometimes like a solid and sometimes like a liquid.Continue Reading
Combine 8 ounces of white glue, such as Elmer's brand, and 8 ounces of warm water in a mixing bowl. Stir well. If colored Gak is desired, add several drops of food coloring.
Add a 1/2 teaspoon of Borax powder to 1/2 cup of warm water and stir. It isn't necessary for all of the powder to dissolve.
While stirring the glue mixture, add the Borax solution a little at a time. The mixture will begin to stiffen immediately. Continue adding the Borax solution, mixing with your hands until the desired consistency is achieved. Gak behaves like a liquid when poured, but it stiffens if punched or squeezed. Store Gak in a plastic bag in the refrigerator.
Gak can be made using cornstarch instead of Borax. The simplest recipe involves mixing 1/2 cup of liquid cornstarch with 1 cup of white glue until the desired consistency is achieved. Gak made with cornstarch isn't as rubbery as Gak made with Borax.Learn more about Fine Art