--UPDATED:
For some reason I am not able to update these files so if you want this sketch go look for it in the forums..
Here is the first step in the linear motion design for the contraptor components (or the mini-router specifically).
Its pretty simple but its 100% accurate right now. So go ahead and use them in your design sketches.. If you want to get these in bulk cheap I suggest you look here.. I got mine from this vendors ebay store.. Link here.... http://www.vxb.com/page/bearings/PROD/8mm/2ISB-1
Riley
This is the method I used to create contraptor components. I invented this method because Vitally's method of printing templates did not work well on my printer.
Using this method you will need:
Directions: