Smith's Easy Extruder / X Carriage

This extruder is a much improved extruder and X carriage for (pre-Prusa i3) RepRap 3D printers. While you can use each individually, they work best with each other.

* Easy to thread and change filament. No need to loosen screws!
* 4 linear bearings for stability and repeatability.
* 4-screw idler block for high, uniform filament pressure.
* Thick, heavy design rules and reinforcements throughout.
* Beefy nut captures for all hex nuts..
* Direction-indicating drive gear.