The steel mill attachment from Messerschmidt can be converted into a hand mill or a manual poppy mill with the hand drive. And if it gets too tiring, it can be mounted on the motor unit and You get an electric grain mill.
The steel mill can grind all types of grain except maize. A big advantage is that it also processes oilseeds. The disadvantage is that it cannot grind as finely as stone mills, but it is excellent for baking bread.