RC - That 3D printer thing you were talking about...

[grnidone]

Now on sale for $1300

The question is:  how much do the printer cartridges cost?

http://www.cnn.com/video/?hpt=hp_c3#/video/tech/2012/03/31/nr-kaye-3d-printer.cnn

[rcjordan]

>cartridge

spools of plastic that feed into the printer:

http://store.makerbot.com/plastic.html

I'm not sure what else is a consumable in 3D. My guess would be that the "print head" wears and has to be replaced periodically.

I'm waiting for the printer model that can handle 4-color objects.

[grnidone]

I think this one does...they made a little model of the newcaster's head, and it was full-color.