We use the OMAX software to interface with the waterjet.
Import the DXF file and then manipulate it a little.

ProE is great once you learn it, however compared to some of the other programs the learning curve can be quite steep.

For Xaxis's grills it was great because there were so many little tweaks to make the grills not only custom for his personal tastes but also perform in a way that this build deserves.