MK5-6 STEPSTRUDER NEMA 23 DIRECT DRIVE PIVOTING FILAMENT PUSHER

This is a direct drive extruder mechanism that fits with the hotend and dinos of a MK5-6. I wanted to move to a stepper drive extruder but didn't want to wait three weeks for makerbot to ship their new beefy nema 17. I also had a lot of issues with the delrin plunger.

I liked the idea of a ball bearing to provide the pressure between the filament and the drive wheel as in a wade's but didn't like the 4 bolts to adjust to change filament.

My other design goals were to leave everything as ac