Summary A cool juicer you just screw on a standard glass jar. Modern Upcycling. These models were made a while back for project RE_, but now they are FREEEEE! Come and vote for me on Instructables Make it real challenge! :http://www.instructables.com/id/Project-RE-by-Samuel-Bernier/ Instructions Make sure you have the good jar. The opening should a standard 4 fillets lip, 66mm of diameter. Most spaghetti sauce jars are this size. Just print and screw! This baby will rip your oranges in seconds. I suggest you use food safe extrusion material.