Prusa i3 Dual Direct Extruder E3D hotend

thingiverse

Dual direct extruder for Prusa i3 with E3D V5 hotend. ## Key features: + Bi-delta wing shaped X carriage structure resulted in a lightweight design with high X rigidity. + Symmetric design with minimum bending momentum load on X axis.shaft. + Relaxed YZ constrain to decouple X axis motion with YZ plane. + Robust cooling mount with E3D fan shroud and blower cooling nozzle. + locking lever on extruder arm for easy filament handling + easily accessible filament path + belt clamp with tensioning capability ## BOM ### Extruder + 2pcs MK7 extruder gear + 2pcs spring + 2pcs 624ZZ bearing + 2pcs NEMA17 stepper + 2pcs E3D V5 hotend, aka, long distance version ### Cooling + 5015s.blower fan, 12v, 52x52x15mm + 2pcs 40mmX10mm 12v fan ### Linear motion + 3pcs LM8UU linear bearing + 2pcs U shape pin made from paper clip pin for top LM8UU mount ### Fasteners + stepper motor 6pcs M3X20 socket head, 2pcs M3X8 countersunk flat head + E3D clamping: 4pcs M3X20 or M3X25 + extruder spring tensioner: 2pcs M3X16 + extruder locking lever 2pcs M3X16 + extruder bearing: 2pcs M4X16 + 40mm fan mount: 10pcs M3X16 + 50mm blower bottom mount: 1pc M3X25 + belt clamp/tensioner 4pcs M3X10 or longer as needed + M3 nuts and washers as needed ## Build: ### The complete build plate file: dual_direct_extruder_e3d_all_parts.stl All parts have been designed for easy printing with minimum or no support. Fan shroud mounting holes can be M3 tapped for mounting without nut. ###update: Video: https://youtu.be/QD0Btv66SBs