As we grow more quinoa (40lbs winnowed quinoa in 2013) we hope to learn a more effective way of processing it. This im sure is also what Andean growers (and researchers all over the world now) have been working on too.
So this January we tried the Five in One seed cleaner at Golden Ears farm with some success. This machine can be outfitted with differing sized cylinders (with different sized holes) depending on the grain being processed. Since we didn't have the correct sized cylinder (it was set up for buckwheat, I think) we did what we could. We modified the main cylinder by tapping a piece of cardboard to cover the holes. If we hadn't, quinoa would just fall through at that stage.
The final verdict below...