Cyborg Geared Bowden Extruder - With Herringbone Gears and Simplified Hardware

I really liked this extruder, but there were a couple of things I wished were different so I remixed it. I've replaced the gears with herringbone gears because I think they're more aesthetically pleasing, and I revised some of the hardware because I don't like ordering stuff that's not available locally. I had the 6001 bearings already, so I retained the M12 bolt.

The extruder will accommodate 1.75mm or 3mm filament, as long as you have the correct tube fitting and the bolt is hobbed correctl