Baking Soda Clay

Here’s another homemade modeling compound that good for both kids and adult artisans. Compared to the homemade polymer clay I presented a few weeks ago, it’s non-elastic when wet and much “softer” when dry—that is, easy to sand smooth or to reshape, to add etchings, and possibly even to carve (I haven’t tried). I’ve used it to make a variety of small items, particularly small bowls and candle holders (shown below in order of finished-ness). It takes paint well but I would finish painted pieces with a coat of varnish.
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Sanded nice and smooth!
Materials
  • 1 cup corn starch
  • 2 cups baking soda
  • 1.25 cups cold water
  • Non-stick pot
  • Wooden spoon
  • Med-large bowl (not pictured)
  • Damp cloth, lid or plate (not pictured)
Steps
Combine ingredients in pot and stir until smooth.
Cook over low-medium flame, stirring constantly, until the mixture resembles mashed potatoes.

Remove from heat and let cool in a separate container either covered with a damp towel or mostly covered with a plate or lid.
Sculpt. If necessary, use a bit of water to stick bits of dough together. Be careful, though, as the softness of this dough makes it prone to dissolve.
Allow to dry, about 2 days depending on the size and thickness of your finished piece. You can speed up drying in a 150 F oven, cracked open, or a 350 F oven turned off (heat the oven to 350 F and then turn it off).
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