How to Repair Plastic Using Baking Soda

Sodium bicarbonate is commonly known as baking soda. This multipurpose powder is useful in cooking, deodorizing and cleaning. Baking soda is a mild cleaning agent and is helpful in cleaning surfaces requiring a non-abrasive cleaner, such as fiberglass bathtubs and plastic containers. Combining it with another common household product, however, creates a strong bond that is useful in repairing plastics. Using baking soda to repair plastic materials is not a difficult process.

You can repair plastic with a baking soda mixture.
  1. Squirt a couple of drops of quick-setting glue--cyanoacrylate-- onto the crack, hole or dented surface of your plastic.

  2. Sprinkle a small amount of baking soda (enough to absorb the liquid) immediately onto the quick-setting glue. This will create a bonding material that fills the surface area.

  3. Repeat the method if the split, hole or dent is large.

  4. Sand the area with a medium-grit sandpaper after it dries, if necessary. This helps to create a smooth level surface.


  • Use rubber gloves or be very careful when using cyanoacrylate-containing products--you can easily bond your fingertips together. If this happens, apply nail polish remover with acetone to loosen and remove the bond. You can also use straight acetone from hardware or home supply stores. Wash your hands thoroughly after using acetone and dry them well. Apply hand lotion to your hands, because acetone-products are very drying.