Users submit designs and Shapeways prints them using whichever plastic or metal material is appropriate. Designers use Shapeways as a source for parts or to create complete pieces of jewelry, vases, toys, etc.

"Woody designs a range of Lego Mini-figurine accessories inspired by historical items from the late 17th and 18th century with nearly 500 items in his Shapeways store," Shapeways community manager Duann Scott said. The items range from $1.70 for a miniature sword to $31.70 for a pack of six cannons made from Shapeways's "white, flexible and strong" material.

Shapeways users have made more than $100,000 in profit by selling through the site since 2008. That's not an overwhelming number, but it's significant considering Shapeways is still pretty underground--and also weird, and hard to explain. The marketplace is also in beta, and users often supplement their pages with Facebook or Flickr.

Shapeways is a Dutch start-up that emigrated to New York after an investment from Union Square Ventures.