On: 3Doodler: The World's First 3D Printing Pen

[sirwitti]

I like the idea. But what happens with all that plastic after it's been drawn.

Can you reuse it somehow? Otherwise this looks like a huge source of waste?

[uxp → sirwitti]

I'd personally love to see the next "generation" (if you can even call the evolution of 3d printers "generations") input a hopper of plastic pellets instead of an expensive filament spool. A simple grinder/shredder could easily recycle old printed models into new raw material.

[revdinosaur → uxp]

There is a product aimed at doing just that: http://filabot.com/ Closing the loop and attaching the output of the Filabot directly to a 3d printer wouldn't be too difficult.