Barence writes: "3D printing is a fascinating technology, but until very recently it's always been just out of reach for most of us. That's changing this year, as evidenced by four big 3D printing companies showing off their consumer wares at CES 2013. PC Pro sought out the booths of MakerBot, Afinia, Formlabs and 3D Systems, and this quick guide to 3D printing rounds up what's out there, who it's for and what technology it uses, and how much it all costs."
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