i have designed and made my own turkey call. it's an alluminum pot with a stainless steel top. it's 3" in dia. and 1/2" thick. moisture has no effect on it. it sounds great, you can make all the different sounds. i can make as many as anyone might want. but i need some body to help me get them out there. i no nothing about marketing something like this. everyone that has tried it really likes it. any suggestions would be greatlly appreciated.