3D printer can print its own parts

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Parts for a 3D printer...printed by that 3D printer
from RepRap website

It can't put itself together, but this is pretty damn cool:
Based in the Waitakeres, in West Auckland, software developer and artist Vik Olliver is part of a team developing an open-source, self-copying 3D printer. The RepRap (Replicating Rapid-prototyper) printer can replicate and update itself. It can print its own parts, including updates, says Olliver, who is one of the core members of the RepRap team.

The 3D printer works by building components up in layers of plastic, mainly polylactic acid (PLA), which is a bio-degradable polymer made from lactic acid. The technology already exists, but commercial machines are very expensive. They also can’t copy themselves, and they can’t be manipulated by users, says Olliver.
This kind of technology will be essential for the Robotrons when they attempt to take over the world.

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