Last updated on November 23rd, 2020
The world has been hit with a slime craze, and here’s how to make slime using glue and borax.
What You’ll Need
- School glue
- Borax (Sodium tetraborate)
- About 1 cup of water
- One very large bowl
- Plastic spoon
- Measuring cup and spoon
- Disposable gloves
- Optional: Food coloring
- In the bowl, mix 1 oz. of glue which is about ¼ of the glue bottle and ¼ cup of water. To make your slime a specific color, add food coloring to the mixture now.
- Add ¼ cup of borax (Sodium tetraborate) to the glue/water mixture and stir slowly. The slime will begin to form immediately. Lift some of the solutions with the stir stick and observe how the consistency has changed compare to step 1.
- Stir as much as you can, then dig in and knead it with your hands until it gets less sticky. It’ll be messy at first, but keep going until the slime is fully formed.
Don’t worry about any leftover water in the bowl; just pour it out. When not in use, store the slime in a plastic bag in the fridge to keep it from growing mold.
How it happened:
The glue has an ingredient called polyvinyl acetate, which is a liquid polymer. The borax links the polyvinyl acetate molecules to each other, creating one large, flexible polymer. This kind of slime will get stiffer and more like putty the more you play with it.
You can experiment with different glues (e.g., carpenter glue, tacky glue, etc.). to see if they create slime.