Ben, we don't have a water jet, just the PlasmaCAM. With a router attached this machine could certainly do this type of cutting. In fact, it could do profile cuts every 0.25" so you wouldn't even have to do much sanding. The table size is 4' x 4' to do anything bigger you would have to split it into sections.
So it is possible, just would take a while to do. Where are you located? Contact me directly off line at
rheuckeroth@hvc.rr.com I don't want to hijack Paul's thread.