Most desktop 3D printers print in plastic, but plastic is weak. The new Mark One by Mark Forged is the first 3D printer capable of printing carbon fiber, which can be added to printed materials to increase strength.
The Mark One is also capable of printing in fiberglass, nylon and PLA plastic filament. It has two print heads, which means you can print two materials side-by-side in one print job.
Mark Forged depicted carbon fiber as a filler (though it won’t stop you from printing a 100 percent carbon fiber object). The main structure of an object is printed in a material like PLA or nylon, and then carbon fiber is added as a thick layer just below the surface. The company reports that the carbon fiber filament is two times stiffer and five times stronger than ABS plastic, which is a bit less rigid than PLA plastic.
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