[piasa]

Years from now our houses could look like paper wasp nests, only bigger.

I'm still stuck on the "low cost hobbyist 3-d printer" ... where are these things hiding?

[Fellow Traveler]

www.printrbot.com
I am looking art the plus model.

[Haddit]

$500 Solidoodle 3D printer
http://www.solidoodle.com/

[mike_9958]

“I’m still stuck on the “low cost hobbyist 3-d printer” ... where are these things hiding?”

Depends on what “low cost” means to you....

http://www.bitsfrombytes.com/usd/catalog/rapman-32-3d-printer-kit

These are under $2000