http://www.3ders.org/pricecompare/3dprinters/ - By far the most complete list of 3D printers.
The filament, the plastic used for printing, has a chip on its container that counts wire consumed and prevents more from being loaded. This can be reset using a arduino board... ARGGH!
Mobile, with my lathe and mill I have realized that I spend about 5% of my time building. The rest of the time I am tinkering, measuring, adjusting, planning the operations... I've become a little bothered by this whole process, so I am hoping a 3D printer will make the process a little simpler, and restore balance to the universe. I think you might get my point.
MrC,
http://www.spudfiles.com/materials-ammo ... 3-165.html
Jrrdw, not so much, prototyping/ fun mostly. Although I have thought of spud related things as a fleeting thought. Timed, impact, successively bursting shell, with some sort of flour-air mixture type deal. Yeah I have thought of it.