See http://www.brainright.com/Projects/CNCRouter/ for more info and a printable 3D model of my dust hood.
This video shows some improvements I’ve made to my CNC router, including the base and enclosure, an inexpensive micro-adjustable leveling system, beefing up the structure of the bed and gantry, improved dust collection, and conversion from the original router motor to a water-cooled spindle with a VFD controlled by the CNC controller I built.
source