Question: how to make crunchy slime with borax?
Answer: Make the borax mixture by adding 1 teaspoon of borax powder to 1 cup of warm water (hot tap water will work). ... 
Empty 1/2 cup of Elmer's glue into a bowl. ... 
Add some food coloring if you'd like and stir well.
Add some of the borax mixture into the bowl and stir with a spoon or wooden stick.