Hot-end set for 3mm filament
This is a set of all components for a 3MM extruder. Depending on the type of extruder you are building some hardware components may be needed.
This is version 5 of the extruder set, it's not compatible with v4.
Here is a X carriage created by Claudio Volpi for the OB1.4:
You need also a stepper motor and driver gear.