3D printing with liquid metals

Holy crap. This video is incredible – it’s been far too long since something got my heart beating THIS quickly! No, really, the possibilities are infinitely more than endless.

“I’d also like to note that the work by an undergraduate, Collin Ladd, was indispensable to this project,” Dickey says. “He helped develop the concept, and literally created some of this technology out of spare parts he found himself.”

Hackaday

Gallium

While 3D printers of today are basically limited to plastics and resins, the holy grail of desktop fabrication is printing with metal. While we won’t be printing out steel objects on a desktop printer just yet, [Collin Ladd], [Ju-Hee So], [John Muth], and [Michael D. Dickey] from North Carolina State University are slowly working up to that by printing objects with tiny spheres of liquid metal.

The medium the team is using for their metallic 3D prints is an alloy of 75% gallium and 25% indium. This alloy is liquid at room temperatures, but when exposed to an oxygen atmosphere, a very thin layer of oxide forms on a small metal bead squeezed out of a syringe. Tiny metal sphere by tiny metal sphere, the team can build up metallic objects out of this alloy, stacking the beads into just about any shape imaginable.

In addition to small metal…

View original post 113 more words

~ by Alexander Riccio on July 14, 2013.

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