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.