The technology to turn a digital spec into an actual piece of molded plastic has been around for a number of years now. But, as is the way of all technology, the price of that technology continues to plummet. Believe it or not, the printer shown here is available from a company called Desktop Factory for only $5000, about the price of the earliest laser printers.
This printer will take an AutoCAD-like spec and produce a simple, contiguous plastic piece, such as this one:
I want one!!!! First thing I’d do is make some Lego compatible pieces. Imagine the fun you could have with this and a Lego Mindstorms robotics kit…