Hello! my name is Roberto, I just finished reading the attached document, is great that you have technical information, this make the project a lot easier, about the nutcracker, as I was reading the project I got a couple of ideas, I'm a product designer, graduate Mechanical Engineer, (If you have the time check my portfolio) and depending on the quantity of nut cracking per second I would choose for one or another, I have experience with industrial process, and food processing.
I'm creating the milestones as you described in the document, only thing missing is 3d renders, and video for assembly, you will be receiving the original editable 3d documents, the finite elements analysis supporting that the elements reach the pressure we aim and that its parts will hold the structure, drawings for every part, documentation for BOM and manufacture process and we can have a call so we can solve any doubt once everything is ready, I back up all my designs so if you need anything in the future that is preventing the design to fulfill its purpose I'll be there without any extra cost.
I'm in chat if you want to talk, have a great day!