A guy working on fixing up a big machine tool.
But it gets even more interesting when he starts using a handheld CNC router at around 3:20 to make the parts he needs. At least it was to me. I haven't looked into CNC much so maybe this handheld one is old news, but I thought it was pretty cool what this thing can do. The augmented reality is neat stuff, but can you catch pokemons on it?