3D printing with "undo" function.

[YorkNecromancer]

Amazing.

http://www.wired.co.uk/news/archive/2013-07/25/undo-3d-printing

[Deadlift]

Yes, that's very cool. Although I'm guessing once you have pinpointed your design down there would be no need to erase and start again. Still an original idea.

I still don't think we will see space marines made out of hair gel though ;)

[YorkNecromancer]

Lol.

It struck me as this is something that suits the amateur more than the professional; once it's an embedded, cheap technology, it would be amazing for people to use at home.

[Nabterayl]

Well, it's not making stuff out of hair gel, it's making stuff in hair gel so you can have a design suspended in space instead of building from a solid surface up. Which is also pretty cool.

[YorkNecromancer]

It's such a clever idea. And the fact the gel worked best with lots of bubbles which is just completely counterintuitive!