Chocolate Extruder

thingiverse

This chocolate extruder, inspired by the Moineau pump principle, allows for object printing with chocolate. It features two driveshafts for motors of varying shaft sizes and two main body versions - one named "fixed2" (original) and another labeled "fixed4," which has fixed minor manifold issues using netfabb. The latter version is recommended for more reliable slicing and printing. Suggested layer height is 0.20mm, with 0.25mm possible but likely not beyond that. PLA is relatively food-safe, while ABS is not recommended except for decorative purposes. Drill nozzle holes of 1.2mm or 1.6mm as desired. Use bicycle inner tube for gasket material and secure the nozzle with M3 nuts and bolts. Assemble the rotor in the stator cavity, fit the driveshaft with a NEMA17 stepper motor, and attach the motor coupler piece. Attach to the printer using the Prusa X carriage with a 40mm circular hole. The extruder requires warm air for optimal results, supplied by a washing machine water outlet hose connected to a shoe dryer at around 30C. Slice GCODE similarly to plastic printing but with larger layer heights and higher filament diameters. Ensure 100% infill density due to chocolate's inability to handle overhangs. Melt chocolate (below 33.8C) for extrusion, pouring it into the funnel to see your creations come to life.