Aside from the cringe worthy safety issues, that's excellent work. I didn't see any precision measuring equipment in evidence, so I do wonder if he takes the "cut, try to fit, cut, try to fit" route. Most of the machines look homemade, and at the very least, usable. And a usable tool lets you refine your tools. I'm surprised he hasn't built the "engine block universal machine" yet. I would. Uses engine blocks as the bed and column/headstock. The bores of the cylinders on the headstock/column are used for the spindle. It can be used as a lathe (imagine getting another 5-6" of swing by simply moving your spindle to a higher bore!), a horizontal milling machine, and with some structural tubing bolted to the column to hold a spindle, a vertical mill.
Kudos to him for making usable machines out of scrap. Makes you wander out to your shop, see all the mass-produced stuff, and say, 'Wow. I got it easy!'