An anonymous reader writes: Bre Pettis is so busy right now he should print a replica of himself. Pettis is a co-founder of the Brooklyn-based consumer 3D printing wunderkind MakerBot. He's also one of the de facto spokesmen for "Maker" culture, whose acolytes design and print objects then post the results online. Pettis dreams of a rapidly prototyped utopia filled with objects custom made by people.He is also an entrepreneur who must deal with the vagaries of supply chains and the demands of his customer base. Txchnologist talked with him last week.