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In 2013, Sam purchased a Shapeoko kit. Made good progress at first, and then it languished in his garage for a few years.
In December 2015, he took it to the space in hopes it would get finished there. It's making progress already 
Electronics: Arduino Uno with gShield. Computer is a BeagleBone Black.
Current status: Starting to function. Needs more calibration, and limit switches, spindle control, etc.
To-Do List
Base: Using a 1/4“(3/16”? not sure- need to measure) steel sheet pulled from the FDM2000. Needs to have holes drilled/tapped to connect machine to base- figure out appropriate size for holes & get fasteners. Additionally, drill holes in base to mount to whatever bench it will sit on
Calibration: seems ok at the moment. Maybe double check with a dial indicator?
Limit Switches: Use mechanical switches for X-/X+/Y-/Y+/Z+. Maybe build/buy a touch plate setup for Z-? Printed the base of a touch plate, and Steve will cut out a brass disc for it on his CNC router.
Spindle control: Set it up like the MaxNC, with gshield driving a transistor, that in turn drives a relay that powers the spindle. Going to get a dedicated relay box for this. $20 on Amazon.
Software: Install ChiliPeppr and necessary add-ons to make it usable. Chilipeppr is basically unusable on a Beaglebone Black. Needs a “real” computer with decent speed/GPU/Internet access to really function.