What would normally be done in a “real” CAD program, I was able to do with KiCad and it’s Export to .DXF feature. As stated above, the company software interpreted 78mm as 78 inches, but otherwise everything else worked and I ended up with a finished product done very inexpensively.
These designs were cut with a Water Jet machine and the results are better than I had expected. If there is any posted interest I can provide photos of how well this actually worked out in the real world with photos of the actual end cut parts.