The Deepeeka stone grinder. Update and results of first try.

[Titus Petronicus Graccus]

Peroni,
It does indeed make flour! You have to keep feeding the cracked grains back into it and then use a small brush to get the flour out.
It is a lot of work though.
When you say "proper opposing grooves" what do you mean? I might just take a dremel tool and carve my own if it makes life easier for us...