View photosMoreThe M1 3D printer prints a sophisticated geometric structure, developed by Silicon Valley startup Carbon, at Carbon headquarters in Redwood City, California, U.S., September 9, 2016.

Picture taken September 9, 2016.

REDWOOD CITY, Calif. Reuters - Carbon, a Silicon Valley startup that is developing 3D printers to produce medical devices and car parts on demand, said on Thursday it had closed on $81 million in funding that brought the total it has raised to $222 million.

"We wanted to go find investors that share the scope of our vision and realize what we are talking about here is industrial re-invention," Kirk Phelps, Carbon vice president of product management, told Reuters at the company's headquarters in Redwood City, California.

Founded in 2013, Carbon said the funding round was led by automaker BMW Group, industrial conglomerate General Electric Co, optics and imaging products company Nikon Corp and chemical manufacturer JSR Corp.

They joined earlier investors Google Ventures and top tech venture capital firm Sequoia.

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