Okay. A little update. I've now got a working flour mill. I'm working on a webpage that will provide all the details, but here are some early photos. For a project recap, I wanted to see if I could make a millstone for processing the sizable wheat stores in my preps. This required a lot of research and reading on the topic. It also required quite a bit of testing. But, I successfully converted a box of ten limestone flooring tiles into a pretty cool millstone. This morning, I ground hard white wheat berries into a couple of cups of flour. The missus is going to make some rolls with the flour to see how it tastes.