I order the glass, slate, or aluminum from customcalls. Then I turn the wood on a lathe. Then Iuse anepoxy to glue it in. You can make them as rough,or detailed as you want in any combination you want. It's just fun. I have made some that sounded terrible...and still called turkeys with them. I have made several variations with glass on glass, slate on glass and so forth. I have more fun making them than using them. I have given all of them away as presents, except one. That's the one I keep in my vest.Have fun in the off season.