Bajdi wrote up a review of 3D Printer extruder:
End of last year I decided to build a new 3D printer. At that time I already owned a very cheap Chinese Prusa I3 printer, it worked, but wasn’t a very reliable machine and it was dead slow. As I did not want to reuse any of the cheap Chinese parts of my old printer I decided to build a completely new machine using better parts. My goal was to build a reliable and fast machine.
More details at Bajdi.com.
Check out the video after the break.
Decent writeup, but people who loudly disparage “cheap Chinese parts” only to proceed to keep using 3D-printed parts are still utterly hilarious.