Directions:
Step 1
Combine 1 ½ cup of warm water with 3 cup of Plaster of Paris in a mixing cup. Mix the two together with the Popsicle stick until you get a thick, soupy mixture. There should be no clumps (Plaster of Paris will begin to harden within 20 to 30 minutes so you will need to work quickly).
Note: If you’re doing more than one color you’ll need to mix them in separate mixing cups. If you’re afraid of plaster drying – do small batches ¼ cup water to ½ cup Plaster of Paris.
Step 2
Mix in 2 to 3 tablespoons of tempera paint. The more paint you use the brighter your color will be. Be sure that there are no streaks or swirls in your mixture. You want the color even.
Step 3
Transfer the mixture into your mold once the mixture begins to thicken. Be sure to wipe any spills and leaks with a damp paper towel before the chalk dries.
Step 4
Let the chalk dry. This will take a day. Keep in mind if using other molds the depth of the mold will determine how long it will take to dry.