While I start to accumulate the parts for my router (already have plates and most of the hardware) I'm already thinking about my next project which will almost certainly be a laser cutter. I'd like to have at least 40w of power. I'm thinking about corexy as it will cut down on the moving mass a bit and a little less in the way of parts. I know some people have used corexy for lower powered diode based machines but haven't seen one used for a CO2. Anyone out there have thoughts good or bad about this idea? I'm a good while out on starting it but thought I'd get some other opinions.