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JimT@Future-Product-Innovations
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Strength and Size
JimT@Future-Product-Innovations   10/9/2012 1:00:17 PM
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Ann - thanks for offering the large size baths that are still being developed.  I had no idea that 3D makers were developing apparatus that large. 6 meters square-?  That's enormous. That's about 50 feet across diagonal; large enough to make a wingspan frame.  Wow.

Ann R. Thryft
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Re: Strength
Ann R. Thryft   10/9/2012 12:35:16 PM
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Chuck, I looked all over for build volume and printer size with no luck. The only clue is that it's designed to build components of large aircraft structures. I'm guessing several feet per side of build volume. Very large 3D printers exist in architectural apps for use with sand and soil and their build volumes can be 2m x 2m x 5m up to 6m x 6m x 2m, and even larger in the works.

Charles Murray
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Re: Strength
Charles Murray   10/8/2012 6:33:13 PM
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Ann, do we know how big the printer is, or how big the parts can be?

Dave Palmer
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Platinum
Re: Strength
Dave Palmer   10/8/2012 1:06:21 PM
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@naperlou: Selective laser sintering typically doesn't yield a fully-dense part, so the mechanical properties would be significantly inferior to those of a forging.  On the other hand, it has been shown that selective laser sintering followed by hot isostatic pressing can give mechanical properties equivalent to conventionally-processed titanium.

It seems like a good move for South Africa to go from an exporter of raw materials to a manufacturer of high-tech components.  Other developing countries could benefit from this example.

Cadman-LT
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Great article
Cadman-LT   10/8/2012 1:04:26 PM
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Great article Ann. I always like learning about the new things they are doing with 3D printing. Titanium now, what's next? Keep the articles coming!

Ann R. Thryft
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Re: Strength
Ann R. Thryft   10/8/2012 12:35:30 PM
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Lou, the strength of the PM/sintered titanium powder metal parts produced by Dynamet has received approval from Boeing for use in structural aircraft parts, after a few years of testing. That news is pretty amazing on its own. The fact that Airbus has signed on to the Aeroswift aircraft structures project to help test selective laser-sintered titanium parts is another vote of confidence. It will be interesting to see what happens during that test phase.



naperlou
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Strength
naperlou   10/8/2012 10:48:16 AM
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Ann, this is interesting news.  One question I would have is on the strength of the materials.  In general, machined materials are stronger than injection molded materials.  Of course, if the strength is enough for the purpose, then that is enough.  Then the speed of manufactur is all important.

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