The MDX-20 can cut the traces and drill holes for PCBs, if they aren't too fine. The spindle, which runs at 6500 RPM max, would be the limiting factor; very fine traces require small tools and a faster spindle. I wouldn't recommend it for drilling the holes in your aluminum plates, since the spindle doesn't have enough torque for that, although it could be used to make divots where the holes should go. One nice feature that this machine has is the ability to scan parts and produce STL files. But anything that is over 2.4 inches high won't fit under the bridge, so it's mostly useful for scanning or milling small, relatively flat parts.