I think some of the GIFs might actually be made from How It's Made videos. However, many of them are also constructed from non-English videos from machine manufacturers, or, in this case, just from a video that someone made to document this factory.

I'd like them to show the tooling more frequently too. Sometimes I wonder if the companies are careful about letting out too many details, while still wanting the virality of a GIF or video featuring their product. For people who like building homemade tools, I do think it's helpful to regularly observe a wide variety of machinery and tools in action, especially rare or esoteric machines or construction processes to which we may otherwise never gain exposure.