Making Large Hypertufa Millstone? Hypertufa Forum Pinterest
Jul 2, 2015 1. I have a couple of questions at the end of my explanation. 2. I want to make a large (32" x 6", maybe 8") millstone to be the top of a fountain. Obviously I cannot make it out of concrete. Thinking about Hypertufa. 3. I found a formula that says 1 part cement, parts peatmo...