BMW, Nikon and General Electric invest in 3D printing firm Carbon

3D printing start-up Carbon revealed that it has raised an extra $81m in funding from investors that include BMW, Nikon and General Electric.

It takes the total raised by the company to $222m, while the involvement of major businesses from the auto and consumer electronics sectors marks a step towards the mainstream for the technology. Carbon’s funding previously came from Silicon Valley.

Carbon’s printers use a technique called "continuous liquid interface production", which makes finished parts from baths of liquid resin, using a photochemical process. According to Carbon, this allows production times closer to injection moulding than "additive" 3D printing.