I bought a lot of cobb pipes on ebay. Yea I know they were cheap but I thought what the heck. They are plain corn cob bowl. I mean the cobb itself, ie not coated with anything. I smoked the first one and thought that this is burning good, too good. Soon i realized it was literally burning a hole through the side. It was then thrown out. ANyone know if I could coat it safely with something or maybe inside the bowl. If not I guess I got what I paid for.