Takes a stack of ~6 20’ long 2x1x1/8 rectangular tubing stock and cuts it into desired lengths. Cutting tool not pictured, partly because I couldn’t find CAD of our chopsaw and partly because laziness.
Watch out freshmen! Robots are taking over your jobs! 
This by itself is really inefficient (an inaccurate to boot) and I can’t see anyone making this. Rather, the end goal is to have a fully automatic setup that makes a robot’s worth of rectangular tube parts while you sleep, by pairing this thing with a CNC machine designed to do tubes, which I don’t know enough to design right now.
In the end, it’s probably less work to train some students, but designing this was fun.