BQ Prusa i3 E3D Bowden

thingiverse

Hey all! I had a BQ Prusa i3 sitting around that never worked with the Witbox extruder, so I decided to modify something to make a Bowden setup. You can use any extruder, but the one I included is just a mod of the Thingybot extruder. It uses a MK7 drive gear and 608 bearing. To install the E3D: Attach the body to the X carriage using two M3 20mm screws. Place the E3D hot end in the mount. Put the top cover with 40mm fan mount on and screw it into the extruder body using two M3 16mm screws. Attach the 30mm hot end fan on the side. Attach the 40mm part cooling fan on the front. For the extruder: Using 3x M3 8mm screws attach the extruder body to the stepper motor. Align the MK7 drive gear to the filament hole. Attach the Bowden push fit connector. Take the idler, put the 608 bearing on it, then add the cap with a M3 12mm screw. Attach the idler to the extruder using a M3 16mm screw. Put a M3 nut into the hole by the filament inlet. Put a M3 16mm screw through the idler and into the nut you just placed. That's it! Just "hang" it like the spool holder that comes with the BQ i3. Notes: You can use the heater cartridge and thermistor from the Witbox hot end on the E3D so you don't need to rewire anything. You can also splice the fan cables to the 30mm and 40mm fans to make installation easier. That should be it, if anyone has any questions let me know!