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Project

Sidewalk Chalk

It's easy to make your own sidewalk chalk using just a few household items.

Materials

  • Cardboard tube (saved from center of paper towels, toilet paper, wrapping papers, tinfoil, etc.)
  • Scissors
  • Duct tape
  • Freezer paper
  • 32-ounce plastic containers (saved yogurt containers work great)
  • Tempera paint in a variety of colors
  • 1 cup water
  • Mixing spoon
  • 1 1/2 cups Plaster of Paris
  • Rubber spatula
  • Cooling rack

Steps

  1. Step 1

    If necessary, cut cardboard tube to about 5 1/2-inch lengths (the size of half a paper towel tube). Other sizes can be used as well. Use duct tape to tape off one side of each tube.

  2. Step 2

    Insert a sheet of freezer paper, cut to size (with paper inside the tube).

  3. Step 3

    In a plastic container, mix 2 to 4 tablespoons (depending on color desired) of paint into the cup of water. Continue mixing while slowly adding the Plaster of Paris to the water, until completely combined. The mixture should be about the texture of frosting.

  4. Step 4

    Fill prepared tube with mixture, assisting with a rubber spatula. Tap tube on work surface to release air bubbles.

  5. Step 5

    The plaster will set in about a half hour, and can be removed from tube after about one hour (check for hardness by gently squeezing tube). Once chalk is removed from tube, place on a cooling rack and let dry completely (at least 24 hours) before using.

Source
The Martha Stewart Show, Episode 5128

Reviews (7)

  • 19 Mar, 2013

    Do you think a few drops of food coloring would work just as well? I've used it in home made sidewalk paint with no problem so far, so Im curious haha I think I might try it.

  • 6 Jan, 2011

    If you cannot find freezer paper, wax paper is a better alternative than parchment. Plaster of Paris dust is not toxic. It can be an irritant in large quantities and if exposure is prolonged, but the dust from this chalk does not pose a health risk.

  • 11 Sep, 2010

    My bag of Plaster of Paris says "Do not inhale dust, avoid skin contact, and keep away from children." My wonder is if this "chalk" dust will be okay for children to handle.

  • 1 May, 2010

    whenever I need to use freezer paper, I have some cleaned and folded and in my craft room. I get it free from buying meat at the meat dept. If you do not want to use paper that has touched raw meat, nicely ask the Butcher for some extra! I had one butcher weigh my meat, wrap it and then wrap it again to where that piece of paper did not touch the meat! Free is a good thing!

  • 1 May, 2010

    would parchment paper work instead of freezer paper??

  • 29 Apr, 2010

    Reynolds makes freezer paper. It is packaged like foil, plastic wrap, etc. It is white and has a shilny surface that will keep the chalk mixture from sticking to it. The packaging is blue and white and you can usually find it in most stores with the foil, wax paper and plastic wrap. Hope this helps.

  • 29 Apr, 2010

    what is Freezer paper? wax paper?