Most CAD software will interface with these devices so that won't be an issue if the designs are already in CAD. Only problem I see may be in the grommet tubes as the prototype is created. Simple 3D structures with no internal hollows was a restriction when these machines first came out. Doing right half, then left half would take care of that problem easily enough cuz you can glue the halves together as a last step. Another issue is trademarking/copyright. Frames are patented and I assume that their molds, etc are also covered. Don't know if there are legal impediments. And finally, there is the prototypical material. It has to be flexible and yet hard. IT IS A GOOD IDEA THOUGH.