That cutter is amazing. I couldn't put a thing like that together if my very life was at stake.
I have a very old flashlight/lantern that was used at some level for railroad work. It has a red light and a clear light. That thing was assembled by a sheet metal worker. the heavy gauge aluminum sheet metal was formed using a bending brake, cut with snips and then a shearer, every edge and surface was filed, and the whole thing was assembled with scrap parts such as spring steel and aluminum tubing. The thing was assembled with pop rivets through hand drilled holes.
I estimate that it took at least half of a day to make it, if not longer. Would someone do that today? Not likely.
A few months ago, I had to hire in a plumber to replace a leaking pipe that I just couldn't deal with. $100. Last week, I replaced a faucet in a pedestal sink. It required intensive work, because there was no simple access to anything. I even had to remove the sink itself, break into the wall and repair it, blah blah, and overall, took about 8 hours over two days to complete it. By the time the job was finished, I could barely walk, arthritis and hours on your back on tile floors is a combination meant to cause pain.