Sounds like you people are of the opinion that Pettis is a Snake Oil salesman. I don't know enough to comment, but give him his due, he's getting 3D printing into the minds of the great unwashed.

Someone has to get the technology from the lab to the sales counter. Remember the TRS-80 and Commodore 64? They lead the way to iPads, Tablets, and dare I say it, mobile phones.

If he makes a few bucks out of it, good luck to him. You've always got to pay the ferryman.

Old Man Emu