-Printed parts (PLA does just fine), one of each. -8mm hobbed bar (I use Hyena from www.arcol.hu) and M8 nuts -3x 608 bearing (inlines and skateboards) -3x 75mm M3 threaded rod -approx 58mm bowden tube (I used a4/6mm aluminium tube but plastic will do just fine) -2x springs (like a Wade's extruder) -2x long M4 screws (depends on your springs) -various M3 screw and nuts -Cable/connector to disconnect your extruder stepper motor and reverse rotation (I used XLR) -I use the original bowden tube as cable holder