Just read, "How to make oilseed presses work for you" in Farm Show, vol 34, no 5. (Hopefully you all aren't getting tired of my article reports yet!) The article talks about using his oilpress that he constructed to press soybeans and canola (in his case) to both mix with diesel for running his equipment (80% oil in the summer and 45% oil in the winter since he is in cold Canada) and feed (the meal) to his livestock. He also uses the meal to make pellets for burning as biomass in pellet stoves. The article discusses the different parts of the press, and how it works.