@awebneck The panels are cast acrylic and planning to mill out the MIP in 3mm aluminum. I bought a CNC router and a laser engraver a few years ago to make the panels for a King Air simulator. As you see in the pictures below, I tried out a clear acrylic today, but it was extruded and not a good fit for machining. You can see the melted edges. Just ordered new white sheets meant for laser cutting. Never finished the King Air, but it was a great learning experience. Even got me into a new product development job.
You have done a great job modeling that GMC 710. But as you say, a model in 3D like that is costly to machine and prototype. I have chosen not to include all the fancy outwards fillets and go for a more basic 2D build up of sheets. Gives the same function, still looks OK to 1/100 of the price and 15 minutes on the laser. But if you like I can run your design by some of the prototype manufacturers I deal with in China after they are done with the new year's celebration. I have an Ultimaker as well, but I'm not happy with the finished product. It doesn't get the smooth finish like the router or laser. It's fine for rougher parts.
Your PCB looks awesome. Just bought autoTrax this morning, but if you don't mind sharing it would be great. The PCB design and software are my weakest skills in this project.
I can try to cut a panel to your PCB and see how it fits.