DIY Drawerslide CNC Machine - Gantry Re-design

I built a CNC machine that used a small inexpensive rotary tool that rode on one drawerslide.  It was fun to see it actually work (this was the first CNC machine that I have ever built) but it was limited in its ability to cut larger pieces of wood.  The small rotary tool also lacked torque and had a tendency to wobble due to no bearing at the collet. 

So I redesigned the gantry to hold a router that could use standard sized 1/4" bits.

Here's a quick little video using Mach3, LazyCam, and some cheap stained pine.