Shapeoko2 penholder (pen holder)

This is a modified version of nischi's Shapeoko pen holder, with mounting holes to fit the Shapeoko 2. Also, I modified the pen holder a bit to make it fit a standard Sharpie that is about 12mm in diameter.

Lastly, I added a couple of tabs at the bottom in case someone wants to attach a rubber band and give some downward pressure on the pen.

You can see nischi's original version here: http://www.thingiverse.com/thing:47696