I am interested in pottery but i don't have the $$ or electrical requirements to buy a commerical kiln. I am looking at making a brick kiln but all the bricks could be kinda pricey. So, i had an idea that im not sure is entirely logical but i was thinking of using an old dishwasher or oven as the framework for a kiln. I would then line this with ceramic fiber blanket and use propane burners to fuel it. I would think that the insulation would prevent the outside metal from getting too hot. Logical?