When can I get one for my desktop?

A 3D printer. [Link]

It looks like the slow crawl towards a consumer 3D printer continues with Objet's newest outing, the Alaris 30. The relatively compact peripheral uses something called PolyJet Photopolymer Jetting to produce 600 x 600 dpi objects up to 11.5 x 7.7 x 5.9 inches in size (not too shabby when compared to the 5-inch cube of last year's Desktop Factory offering). Equally impressive is the printer's ability to manufacture small moving elements and elements as thin as 0.0011 inches. A generous build tray means that many small parts can be printed simultaneously, and the company promises up to 36 hours unattended printing from your 3D CAD files. Finished models leave the printer fully cured and hardened by UV light.