At work I use a Markforged Onyx One 3D printer. We print CNC and CMM fixtures, prototype and sample blades for trial fitting., and many specialized tools. It is far superior to my home printers, as the material it prints in incredibly strong, and expensive.

Onyx™ is a micro carbon fiber filled nylon that yields accurate parts with near flawless surface finish. Few materials have the versatility of Onyx; it offers high strength, toughness, and chemical resistance when printed alone, and can be reinforced with Continuous Fibers to yield aluminum-strength parts. Today, there are more than a million Onyx parts in the field transforming manufacturing.