I Designed this because I liked the vertical axis style, but none of the current designs that I found would let you use current extruder designs. This lets you use a Gregs Wade style extruder, and most anything with the same style mount.

Edit: I have redesigned the carriage bit to have holes for mounting different attachments. There is now one that will hold a Gregs Wades style extruder, and one for mounting a dremel flexible shaft to it. The top holes are spaces so a fan can be mounted to the carriage, or for extra accessory bits

I have uploaded the SolidWorks2012 files below, as well as the assembly and the support files as a rar.

Edit: Uploaded videos of this here http://youtu.be/RT0YAYO6GR0 http://youtu.be/NgFt0bLryy4

Print Assemble All LM8UU Bearings are attached with one ziptie. They shouldnt move when properly tightened. All holes and nut traps are designed for 6-32 nuts/bolts, but I believe that M4 should work as well. Except the Z leadscrew and the Idler pully, which are for 5/16" or M8.

Print more things with it.

Here is a flickr set with instructions on how to assemble in the comments http://flic.kr/s/aHsjwsrGWa