That video is ancient! Nice find
Self-replicating sounds sexy but the reality is that just a small fraction of the parts needed to make a desktop printer can be printed on a desktop printer.
Do you guys know this is the beginning of the desktop 3d printer?
A small fraction = the most important bits. Everything that isn’t a metal rod or a motor is printed. Your local hardware store has metal rods, but it doesn’t have anything that can join four of them into a high-precision linear gantry.
A small fraction = of the total cost to build a printer. A decent printer can be built around 600$, the printed parts are about 50$.
Once printers can print motors and electronics, then they will really be self-replicating.
Not at all. I’m just saying that calling these self-replicating is false advertising 
(That was a joke. In case you missed the smiley face)