I've had a slightly different response from my friends. While they think it is cool, they think I'm a bit of a mad scientist and don't really get too inquisitive. They ask me if I've printed anything cool lately, I show it and then things move on to other topics. I just don't think they fully understand what they are looking at even as I've done my best to describe it. Maybe I am a tremendous geek in my circle of friends. In fairness to them, I am a little older so maybe they are so absorbed in the things they are doing (like paying for their kid's college) that they just aren't that curious.

But that's an interesting observation. The press likes to say that within "x" years over 50% of the public will have a 3d printer. Maybe there is going to be a division of interest based on age. From my perspective, 40-50ish friends of mine are mildly interested and I'd bet few of them would say "yes" if I asked, "would you buy a 3d printer anytime soon?"