Hi Kerry, this is Peggy. Hope this is the information you are looking for to make a microwave kiln. Good luck with your project. How to Make a Microwave Kiln | eHow
Aug 30, 2017 - A microwave kiln is a refractory appliance used inside a microwave oven to focus the microwaves into its interior space. The space is typically ...
Cheaper to buy one.
Hi Kerry, I agree with William and I think it is safer to purchase one as well.