Some pics of the final buildout of my train depot. Cut from .060 styrene on my Probitix X90. Finished up with Rustoleum flat cammo colors from rattle cans. This should fare much better out in the elements than my wooden structures, plus styrene is way way easier to work with than wood.
I use Inkscape to draw the plans, then the free version of CamBam to make the G code cutting paths. The X90 uses a Dewalt dwp611 palm router driven by a super PID speed controller. All cuts are made with preciseBits 1/32 inch 2 flute endmills.