The machine today is a lot bigger and can churn out over 3000 donuts per hour! The machine has several main parts: mixer, extruder, proofer, fryer, glaze waterfall, retail curve, and cooling tunnel.

Recycling plastic into filament normally involves chopping it into tiny pieces and pushing it through a screw extruder. [JRT3D] is taking a different approach with PetBot, which cuts PET bottles in… ...