HARDWARE
Here is the first image I created. What else would I have drawn?
All the 3D objects can be found here:
http://www.thingiverse.com/thing:648119
Many thanks to the corexy.com website for the inspiration to design this plotter.
Image Credit: corexy.com
Notice the 45 degree offset of these two pulleys in the picture below... I will need to use the diameter of the idler pulleys as a parameter when spacing the two holes. OH NO! will I actually have to multiply a parameter by the square root of 2! Yay, I'm using one of the 3 things I remember from my college degree.
Image Credit: corexy.com