Well, the Grandkids and I ground some premium wheat berries with a Wondermill Jr. and what a workout. Won't have to worry about excess pounds from eating the bread, I burned up all the calories just turning the crank. I think I'm going to look at getting an electric one if I keep grinding my own wheat. It does work well, but takes lots of effort. In the prepping mode, I will either go to wind or water power to turn the darn thing...