There is already lots of tuts on the Internet on how to do this so I won't go into too much details. However I should add that I set my oven at 200 degrees C :). I also had them in the oven until all the crayons melted (10-15 mins). Should be quick but I had some stubborn ones that took a while. I allowed them to cool on the bench then put them in the freezer for about 5-10 mins. They then popped out really easily :).
Here is the full set of crayons I did today with my whole stash of old crayons.
Here is the close up of the Fish Crayon
Here is the close up of the Teddy Bear Crayon :).
Thanks for stopping by :).
Jenn.