Status : idea

Tools / Materials

• must be mostly available in John Doe’s shops 
• 3D printer or the precious plastic machines, a DIY press or/and injection
• hard as possible : PET, HDPE, ?

Components

• driveshaft : hexbar from metal or via extrusion
• side plates : oven and press (clamps, vise), the shape is done by arranging metal bars the way and size needed
• blades: as side plates, injection or press via epoxy, plaster or aluminum folie in wood
• drive : motor and/or hand wheel
• optional : transmission : gears and/or wheel
• optional : metal knifes mount on blades
• optional : metal enforcement for side plates, blades and counter blades 

Outcome

• shredding soft materials as often found in house holds
• well, what about a useful machine done from recycled plastic ? what about the old reprap idea, making machines from machines ?  

Problems / Challenges

• hand wheel needs to big, up to 50 cm diameter : kid bicycle wheel. alternatively if gears can be printed, the wheel can be smaller