3D printers

Some computer labs and research companies use printers that can print three dimensional models using plastic. 

Do you think these could be mass produced in the future to the point they'd be affordable by consumers?  Like, making your own action figures, models, etc.

Don't think there'd be much demand. Current models are large, messy (using vats of fluid polymers or coatings of powders) require regular maintenance and are slow as hell, and not that many consumers would have the CAD skills to build worthwhile models (unless they're really into spheres and cubes). If they could get the technology to be as simple and low-maintenance as a regular 2D printer, then there might be a significant hobbyist market for them provided the price can drop far enough (even the "budget" model 3D printers at present are $25,000+).

>>2
>Don't think there'd be much demand.
Not now perhaps.  But the replication of items now classed as "disposible" and made out of polymers, from a recycled feedstock would quickly spread to home use.  Need a fork?  Cup?  Toothbrush?  Butt-plug?

Whoever locks down the rights will make Bill look like a Wall-Mart Greeter.