We wanted people to 3-D-print anything, not just more 3-D printers.

I still have the first bottle opener I made on my MakerBot. Things you fabricate are things you care more about. I think there will always be people who go and buy crap at the dollar store. But I think it is cool when people craft things themselves.

We're on the brink of the next industrial revolution. Instead of buying things, you can make them on a printer. When you have a 3D printer, you can iterate more - what used to take months, now takes hours.

My parents had a software company making children's software for the Apple II+, Commodore 64 and Acorn computers. They hired these teenagers to program the software, and these guys were true hackers, trying to get more colors and sound and animation out of those computers.

The people who are getting 3-D printers at home are pioneers, kind of like the people who bought Apple IIs in 1981. Adults are usually the last people to get it. The kids are like, 'Get out of my way, I want at this thing.' They immediately start getting creative.

We got involved with the RepRap Project, a community focused on making 3-D printers that could make copies of themselves and help create a world without money. We started making prototypes.