[techtiger1]

We use .125 aluminium composite material (ACM) for belly pans. The material is two sheets of aluminum sandwiched around a sheet of plastic. The plastic center allows the material to be easily routed and bent to our specifications. If you wanted to use plastic I would go with .125in thick lexan or uhmw polyethylene. AndyMark sells some perforated material that always looked cool to me as well for bellypans if you wanted to go that route. Of course if you really wanted to get fancy they do make honeycombed aluminum and plastic sheet material as well.