A thread awhile back about the "DIYLilCNC" finally prompted me to do the CNC router build I'd been contemplating for a couple of years. The main breakthrough was figuring out how to make the dimension-critical parts with the laser: I laminated them out of three layers of 6mm MDF. That allowed me to use the laser for two operations that it normally would not handle well, (1) making countersinks for the screw holes and (2) "drilling" the edge holes for the cross-dowel bolts. Other than that, it's a fairly conventional MDF/skate-bearing design, albeit a bit heftier than most. Cutting area is roughly 32"x17"x5", sized to fit some odd space constraints in my garage.