NSTT Extruder

This is the NSTT Extruder. (Revision 3 now available) I've designed this extruder in December 2016 and after some heavy testing and redesigning I decided to share it. NSTT stands for "Not So Tiny Titan" and is an E3D Titan inspired printable extruder. Despite the name it is a pretty compact geared extruder when compared with other geared extruders. It has the same 3:1 gear ratio as the E3D Titan. It incorporates parts from my initial MK8 extruder like the spring, the hobbed gear and the 623z bearing. To built this is necessary: -4x M3x10 screws and nuts -1x M5x40 screw (Hexagonal head) a M5 nut and an M5 nylon lock nut -5x M3x25 M3 screw and nut -1x M4x20 screw (internal hex head) and nut -2x option 1-625ZZ bearings (needs 1xM5 washer) option 2-688ZZ or F688ZZ bearings (no need for washers) -1x 623z bearing and a M3 washer -1x MK8 hobbed gear -1x MK8 tension spring -1x extra 625z if using idler+body B This extruder has hundreds of hours of work and it has be