What do we need?
6 chicken eggs
1 drop of food coloring of your own choice
1 teaspoon of hot water
1 teaspoon of wheat flour
kitchen towel
a sieve
something to pound the eggshell with
What do we have to do?
1. Take 6 chicken eggs. Remove the insides, the membrane and wash them thoroughly.
2. After they are totally dry, pound the eggshells into fine grain, best if its in powder form. Get a cheerful friend
(thanks for your help, Hani [pic] and Nuyun!) to do it because it can be a pain in our er, hand to do it alone
3. Sieve eggshells to make sure there is no big chunks of eggshells.
4. Gather atleast a tablespoon of eggshell powder mix with a drop of food coloring, water and wheat flour
5. Mix them well and wrap in a kitchen towel.
6. Leave it for a day and tada. . .we have our own chalk!
Why do we use chicken eggs?
Chalks are made from calcium carbonate just as eggshells, shells, and lime stone. Unless we can find not only a cheerful but muscular friend, let's stick to eggshells :D
How about replacing the chicken egg with other birds' eggs?
Other birds' eggs are calcium carbonate too so it will be just find. Our teeth are made from calcium carbonate, so feel free to experiment with it!
Why do we pound the eggshells into fine powder?
The sharp edges of the eggshells will scratch the surface that we want to write on instead of making a smooth line on it
Why do we use a very minimal amount of water in the mixture?
If the mixture has a lot of water in it, it will take a longer time for it to dry and maybe it will be a bit brittle
Published with Blogger-droid v1.7.4