Carbon fiber must be placed in proper alignment for its intended purpose, making 3D printing more challenging.   By Kathleen Maher The newest 3D printer on the scene comes from an eager bunch of MIT grads. Their invention, the MarkForg3D, is the first desktop automated fabricator that can produce parts reinforced with carbon fiber. Co-Founder and CEO Greg Mark, who … [Read more...] about Startup MarkForged makes composite parts