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Re: [Phys-l] 3-d printer



On 07/15/2011 01:19 AM, Marty Weiss wrote:
The latest "wow!" video making the rounds on the internet recently is
the 3-d printer clip on YouTube and other internet vid sources. In
case someone hasn't seen it... a narrator takes us into a lab where
the "inventor" shows the process whereby he takes a wrench, scans it
in a new type of scanner, puts the printout into some sort of 3-d
printer (after coloring the adjusting mechanism red) which contains
some sort of "resin"material and after a few minutes the narrator
reaches into the pool of "resin" and out pops a copy of a real
working wrench with a red adjustment gear. The copy does the same
job as the real wrench.

The narrator is a "real person"... a PhD and astronaut (at least
according to several articles I Googled), but the whole thing has to
be an elaborate hoax. Either that or it's the biggest invention
since the light bulb. If it is a hoax, I have yet to see anyone
write about it on any discussion group, on YouTube, or other news
source. Likewise, a real invention such as this would have been
heralded throughout the scientific world by now. Anyone have any
explanation or comments?

The technology has been around for years and years.

http://en.wikipedia.org/wiki/3D_printing