You can do this by making your own mold or using one you buy.
Gather the molds you want to use: pre-soaked plaster, silicon or rubber molds.
You can use chocolate or ice cube molds from the store.
Gather old or new crayons (broken are fine, you are going to melt them anyway).
Peel the paper off of the crayons (soaking crayons can help get stubborn wrappers off).
Once they are all peeled you can start melting them using an old crock pot.
Make sure you use a crock pot you never want to use for food again
because some wax residue will persist.
The marbling that you see in the crock pot will disappear as soon as you disturb it.
Keep this in mind when you melt your crayons- A nice marble of yellow and blue will just turn into green when you start to scoop it out of the crock pot. If you want to do multiples colors for one crayon you can heat small bowls individually over a burner or pour the crayons one layer at a time, waiting to melt a new color in the big pot before you can do it. You'll have to wait until the previous color/layer is cooled before you pour the subsequent.
Using a scoop (that will end up with crayon wax all over it) scoop the crayon wax
into your mold until it is filled to the top. The wax will shrink as it cools and leave a low
spot in the center of the top of your cast. You can fill this or leave it as is.
When you are done pull your crayons out of your mold.
Use an exacto knife or other tool- clay tools often work well-
to clean up any seam lines or pour spouts.
Enjoy! You can take it one step further by making molds of your own
sculptures/sculptures your children make and turn them into crayons.
"Homemade Silicone Molds" tutorial to follow, check back soon!
