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3D metal printing may be a new future in Navy ship construction

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An arm passes across a plate in the big machine, depositing powdered metal before a laser fuses it all together. 

Wipe. Zap. Wipe. Zap. 

Hour by hour, and layer by painstaking layer, the machine, a 3D metal printer built by 3D Systems, hums away. 

Wipe. Zap. Wipe. Zap. 

"This build has over a thousand layers so its just slowly making its way through," Dan Hebert, an engineer at Newport News Shipbuilding said. "It'll take a little over a day. It runs continuously." https://pilotonline.com/news/military/local/article_878d3db6-feef-11e8-8d13-8fb4f128133b.html

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