I made one lately as well using a router and a band saw. Thanks for the info. I thought my slate was too thick. It was.1/32 is very thin. You can buy lots of 5 pieces of circular slate on ebay. Very Cheap. Mine sounds very nice but I thick I would get more volumn if the slate was thinner and the wood harder. Some people just by a cheap laminated cutting board from Walmart for a few bucks. You did a very nice job. Mine was fast and sloppy. I just wanted to see if it would work. It does . I plan on using it Friday along with my Primos Freak.
Chuck