I am building a simple electric smoker out of a filing cabinet to smoke home made sausage and other stuff. It will be a simple concept to start with which will use a standard electric hotplate and pan for the heat and smoke generation. The cabinet will be insulated and skinned on the inside. Would there be any safety issue with using aluminum for the inside skin. Max temps would never be over 250 degrees. I can't see any issues with the aluminum as aluminum cooking pots and pans have been around for a long time, not to mention I wrap my ribs and brisket with aluminum foil everytime I cook them, but I thought I would ask the question just to make sure.