To complement the Prusa Mendel Visual Instructions I quickly put together a similar guide for constructing Wade's Geared Extruder.

The document is available as a PDF in several resolutions on the start page: Wade's Geared Extruder Visual Instructions.

I actually wrote most of the text for this one myself, so if anyone finds a mistake or improvement there is an issues tracker in the github project.  Here one can also find the source files used to create the document.