We saw on line the "Grenada Chocolate butter press:http://www.grenadachocolate.com/?s=cocoa+butter+press
and had one made locally---it works very well if one heats the mass first.....and the cocoa powder is excellent. It didn´t cost us more than 1000 dollars....thought I would add this because I haven´t seen anything better!
This press is really simple---only takes 3 pounds of mass at a time....I put the mass in a stocking---the top has hot water---which I don´t like---should be in a seperate tower. 12 ton jack---and I love the results---cocoa butter comes out below---245--260 grams for 1300 cocoa mas---so we end up with a little over 500 gms of cocoa powder----great stuff..never had tasted better cocoa!