Just purchased a food dehydrator for drying paint. It's a Costzon and the food area is (rectangular) 12.6 x 9.8 x 5.1. I thought the configuration would lend itself well for this purpose. Anyway, having never use one before, I would like to know what, if anything, is used to support the parts for drying? Support material ie: plastic, wood, metal? Also, any tips and or concerns using the dehydrator would be greatly appreciated. Thanks in advance.