Ive been using one of these for four years or so with no problems. They a product of the peoples repubix of china and marked "500" on the cast part, sold by varios nenders on e-bay.

http://www.ebay.com/itm/NEW-Cast-Iro...item1c2be48be6

Keep in mind im just cracking the wheat not making flour. The flour that could be made with these would be too course for baking. I need to get a motorized made in the USA unit and start baking

http://thesurvivalpodcast.com/forum/...?topic=27190.0