Comment: I have a Makerbot Cupcake

I have a Makerbot Cupcake Batch 15 -- And mine will never print good enough to print a working gun :-(

I did print this pretty awesome Mars rover though...

http://www.thingiverse.com/derivative:36388

3D printers are extremely cool and new the models are printing in microns as opposed to millimeters.

And to who ever mentioned printing food... here ya go:
wiki.makerbot.com/frostruder-mk2