While Reviewing this project please keep in mind Open Source Hardware is truely Open if you can understand, rebuild and modify it. Where ever you feel like this is not the case please leave a comment this will help the Maker's Mill project to improve and make it more Open to everybody.
Furthermore the Makers Mill has a special dependency with the Uni Pro Kit. The Uni Pro Kit is designed to be a easy to use construction set to build many different machines. One of these machines or derivatives is the Makers Mill. Therefore the documentation might point towards the documentation of the Uni Pro Kit. Please feel free to comment on this relation wherever you feel like.