So some some guy built a complete SLR camera from parts he made on a 3D printer.
If you're wondering what industry is the next one of be disrupted, this is it. Manufacturing is in for a rude awakening. Some people think it's a big deal Apple is starting to make Macs in the United States, but it's nothing compared to the grassroots movement to make anything right in your home.
Oh and I love how The Verge article refers to him as a 'maniac'.
Humans like to do that. Anyone who's not middle-of-the-road, anyone extreme is labeled a 'fanatic', or 'obsessed'.
It's actually called passion and it's required to make art.
Don't let people make you feel bad about what you love to do.