Bowden style paste extruder

thingiverse

This is a DIY stepper paste extruder made in bowden style. It's meant for use with a silicone tube (6mm OD) and bowden connector (PC6-M6) attached up front. The silicone tube connects directly to the printhead, which can be crafted from anything like a needle or a silicone cap. The main component of this extruder is a PVC pipe with 50mm OD and walls that are 1.8mm thick - it's soon going to be replaced with food-grade INOX pipe of identical size. Up next: I'll be creating a printing head for the Printrbot Simple Metal 3D printer. Bill of Materials (BOM): Printed Parts: * Piston.stl * Stepper Mount.stl * Topmount.stl * Gearmotor.stl * Gearpiston.stl * Standoff.stl Other parts required are: * M8 x 700mm Threaded rod * Three M8 nuts * Two M8 butterfly nuts * Three M3 x 40mm screws * Three M3 nuts * Ten M3 washers * Two 608 bearings * Four M3 x 10mm screws * One M4 x 10mm screw * One M4 nut * One rubber o-ring * One bowden connector PC6-M6 * Fifty millimeters OD PVC pipe (150mm long) This DIY stepper paste extruder is still under construction and lacks a proper O-ring as of now. Print Settings: Rafts: No Supports: No Infill: 20% Notes: I recommend that the gears are printed with 100% infill, while supports for the piston should be set to everywhere in Cura.