I ran across a post this morning at MAKE Magazine (which is a great mag, by the way) that explains different 3-d printers that are currently available, including both commercial and open source projects.
In the last few years Rapid Prototyping(RP) has become more automated and much cheaper. Machines suitable for offices and academic environments have appeared on the market and have been christened 3D Printers. A range of different RP technologies exist and two companies have come to dominate the market, Stratasys & ZCorp. A quality 3D printer from either of these two will cost in the order of £30,000. Each has its advantages but to me the color capabilities of the ZCorp 510 makes this easily the most desirable machine. It is the machine currently used by the majority of the top UK 3D print bureaus. Also Bristol Fine Print Research have a couple of ZCorp machines. If you had a larger budget (£100,000+) then you could look to go to the high end Rapid Prototyping machines again from Stratasys which can build to a much larger size and precision and also use a bigger variety of build mediums. There are also some cheap and cheerful approaches you could take with a budget of a few thousand pounds.
14 3-d Printers [via Fabbaloo and MAKE]
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