How to make flubber


By Caitlin Murray Giles


If your kids can't resist slimy, sticky, messy stuff, they are absolutely going to love flubber.


  • Warm water (about 2½ cups total)
  • 2 cups white glue
  • 3 tsp. Borax (a non-toxic laundry detergent)
  • Food coloring
  • Measuring cups and spoons
  • 2 mixing bowls
  • Spoons
  • Storage container


  1. This project can get messy, so take the necessary precautions, including covering your work surface and wearing smocks or old clothes.
  2. In a large bowl, combine 1½ cups of warm water, 2 cups of white glue and drops of food coloring until you reach the desired color. In another smaller container, combine 1 cup of warm water with 3 tsp. of Borax. Using separate spoons, mix the ingredients in each container thoroughly. Pour contents of small container into the large container.
  3. Next comes the best part: your kids get to dig their hands into the mixture and squeeze everything together. Combine until only a tablespoon or so of liquid remains. This process takes at least five minutes (or more if you are really having fun with it).
  4. Flubber will be very sticky at first. Allow the excess liquid to drip off as you work with it. When the flubber is ready, the real fun begins. Encourage your kids to get creative as they explore this fascinating substance-stretch it, roll it, bounce it.
  5. Store flubber in a covered container for up to three weeks and don't forget to remind everyone that flubber is not edible.
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