3D Printer Prints its Own Upgrades

The 3D printing scene is just getting weirder and weirder as more and more 3D printers get out into the wild. Today’s 3D printing development is a series of extendable clamps that allows the MakerBot 3D printer to print larger objects. This is not particularly strange on its own. The weirdness: The clamps can be printed by MakerBots.
The clamps were an entry in a contest specifically for MakerBot modifications that could be printed out on a MakerBot. Other entries included modifications to the print head and troubleshooting tools for various common 3D printer "jams."

http://www.pcworld.com/article/211577/3D_Printer_Prints_its_Own_Upgrade…
http://blog.makerbot.com/2010/11/23/pattywac-dueling-design-giveaway-wi…