Squeeze about 4 ounces of glue into a glass bowl.
Mix in 1 1/2 bottles of warm water. ...
Add your food coloring, if desired. ...
Mix 1 teaspoon of Borax into 1/2 cup of water, and slowly add the solution to the glue mixture.
Stir in the Borax solution until the slime started to come together. ...
Knead the Flubber.