That's pretty easy and a good hobby. The bigger challenge is the OS - as many modern window-based OSes require pretty substantial hardware to operate.

Not in Atlantis.

MacGuyver meets John Galt--I love it!

This is a major breakthrough. Just wait until a few inquiring minds figure out how to scale it up a bit. The possibilities are incredible. I'm thinking of the templates made by Defense Distributed and similar.

Knowledge. Also, once a person builds this and understands it, increasing the size of the build area would be 'easy', you basically just need to make the case bigger, and have longer screws to move the print-head farther. Maybe you don't get those longer screws from junk-tronics, but home depot sells threaded rod pretty cheap (maybe a couple bucks for a 3' rod?)

Awesome!

Do you think we need a 3D Printing Agency to ensure it develops the right technology, doesn't print the wrong stuff, and is appropriately taxed?

I just emailed those instructions to my son, who built his own PC mostly from scrounged up parts.

Then I guess it's learning the skill and scaling it up if needed.

I wish it had been this easy 20 years ago.
Integrating proprietary software from multiple suppliers was "interesting". I was the first user of GE's twin servo sync card for a PLC. 5 new EPROM burns to get it working....then the licensure and confidentiality. It was a blast....the machines are still operating in Madison WI and West side of England.

Has anyone tried to build this?

This looks really interesting. What can be built with a printer this size?

i see a weekend project in my future...

This has many of the same software and hardware selections that I use.