How to Make Super Strong Permanent Glue


From grade school and throughout adulthood, glue helps create crafts and fixes broken items. Commercially available glues rarely live up to their claim and often contain a long list of potentially harmful chemicals. Casein glue, however, is a protein-based glue with roots that trace back to the ancient Egyptians. It is super strong, and you can make it using inexpensive household items.

Things You'll Need

  • Small saucepan
  • 1 1/2 cups skim milk
  • 3 teaspoons distilled white vinegar
  • Whisk or stirring utensil
  • Strainer
  • 1 tablespoon baking soda
  • 1/4 cup water
  • Small bowl
  • Glass jar with lid

Step 1

Pour the milk into a small saucepan. Set on the stove and heat on medium until the milk is warm.

Step 2

Add the white vinegar slowly to the milk and stir. Continue stirring the mixture until the milk begins to separate into liquid whey and solid curds.

Step 3

Pour the mixture through a strainer. Discard the liquid whey and put the solid curds back into the saucepan. Hold the solid curds in your hand and squeeze gently to remove any excess liquid whey.

Step 4

Combine the baking soda and water in a small bowl until well mixed. Pour the mixture into the saucepan with the solid curds. Turn the stove on medium heat. Heat the mixture while stirring continuously until it starts to bubble.

Step 5

Turn the heat off and let the homemade glue cool for several minutes. Transfer the glue to a glass jar once it is cool to the touch.


  • Store the homemade glue in a safe location out of direct sunlight and away from heat.

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