Wax is something I have never used. Most of my carving are made out of bake clay. At first using the clay it was very frustrating due to the clay gettng to hot and very hard to work with from the heat of my hands. I now got a good understanding on how the clay works. Here is an idea start two projects at one time. Whenever the clay is gettin to warm and hard to work with place it in the refrigerator for ten minutes. When waiting for the first project to cool down start on the second one and alternate the projects in and out of the refrigerator. Just my two cents. I hope this helps.
Pancho