It looks so easy! You basically unwrap your crayons (it's great to reuse your old broken ones), put them in cute molds like this:
Then place the molds in a pre-heated 250 degree (F) oven for 5-10 minutes.......peeking in on them every so often. Also, place tin foil down on the rack below the crayons, in case there are any spills. Crayon would not be fun to clean out of the oven.
When you have noticed that the crayons are almost all the way melted, use a toothpick to gently poke at the crayons........releasing some of the air pockets. But you don't want to actually mix it because you want your colors to stay separate and vibrant.
Once the crayons are completely melted, pull the molds out of the oven and allow them to rest on the counter until cooled. (It took about 15 minutes for crayons this size.)
**Variation: You can melt crayons in the microwave (in a bowl) and pour the liquid wax into molds. However, doing it this way won't give you such a nice chunky color variety in each crayon. But it would still work great and produce a fun new crayon shape.
Then place the molds in the freezer to allow them to really harden.......and speed up the cooling process. (I left them in the freezer for about 15 minutes.)
Next, run the bottoms of each mold under hot water, to help soften up the silicone tray and help separate the crayons from the bottom of the mold. Then push the molds from the bottom and pop out each crayon.
Now you should have a lovely assortment of fresh new crayons.