Biocolor Street Chalk
- 1 cup plaster of paris
- ½ cup cool water
- 2-3 tablespoons of BIO COLOR
- Mix 1/3 cup of the cool water with the BIO COLOR
- Pour plaster into a disposable container
- Using a disposable stirring stick, pour BIO COLOR/water mixture into plaster
- Stir well, especially at the bottom of the container (Colors will darken as they dry.)
- Add just enough water to wet all of the plaster
- Stir well and pour into molds
Suggested molds: 3 oz/5 oz dixie cups, Novelty ice cube trays
Chalk will set in about 30-40 minutes. Then release from molds and let stand for 24 hours. (Leave chalk in dixie cups to cure.)
- 2 Cups Water
- 2 Cups Plaster of Paris
- 2 Tbsp. Tempera paint
- Toilet paper tubes with duct tape over one end
- Combine and stir together. Let stand a few minutes.
- Place tubes on cookie sheet lined with foil or wax paper.
- Pour mixture into holders and let stand until semi-firm. Remove holders and let dry completely.
- Ready to use in 1 to 1 1/2 hrs. (Reminder, never pour plaster down sink).
- 4-5 Eggshells
- 1 tsp. Flour
- 1 tsp. very hot tap Water
- Food coloring, optional
- Wash & dry eggshells.
- Put into bowl and grind into a powder. A mortar and pestle works fine for this. Discard any large pieces.
- Place flour and hot water in another bowl and add 1-tablespoon eggshell powder & mix until a paste forms. Add food coloring if desired.
- Shape & press mixture firmly into the shape of a chalk stick.
- Roll up tightly in a strip of paper towel. Allow drying approximately 3 days until hard.
- Remove paper towel & you’ve got chalk! Eggshell chalk is for sidewalks only.