(At a past startup, we used 80/20 for the structure of our factory stations. We were very happy with how 80/20 was easily adapted during prototyping and testing, and then our final station design could be replicated quickly stateside to several stations, then disassembled into a few assemblies for flight, reassembled at the factory in Asia, and hold up well in production, and it also looked professional for demos. A lot of that success was due to the know-how and effort of our mechE, but, IMHO, 80/20 is appealing to people who grew up with Lego-like toys, and even I, primarily a software person, felt I could do useful things with it and some basic tools.)