I was looking for a way to mount two extruders to my Folgertech Prusa I3. After downloading a bunch of fantastic examples from thingiverse, I decided that I should just design my own. I didn't want to lose the bearing and belt mount that I had from a previous extruder mount, so I designed this piece to allow me to keep a good set of linear bearings, and belt holder.
In order to make this work, you will want to have the following item first.
Reprap Prusa i3 3D Printer Parts X Axis Printing Head X Metal Extruder Carriage
3/5/2016 - I have attached a PDF file that has the screw hole spacing for the linear bearing.
I wanted a fine quality print, so the settings above were done with Cura 15.04.4 and I used ABS for the print, with a 50% speed.