About Us

GKN Additive (Forecast 3D) is a digital manufacturer of advanced plastic and metal AM parts, backed by GKN Powder Metallurgy’s 260+ years of engineering and production expertise. Equipped with one of the world’s largest global networks of industrial 3D printers and innovative digital solutions for aerospace, automotive, industrial, healthcare, defense, electronics, consumer products, and more, GKN Additive (Forecast 3D) supports projects from 1 part to more than 1 million. Leading in prototyping to production with international manufacturing, advanced technologies, and raw materials, GKN Additive (Forecast 3D) gets your product to market faster.

With the choice of industrial equipment, custom software, quality of people, and the constant evolution of processes, we are passionate about everything that is required to make a modern manufacturing facility like this hum. From one of our very first projects of a rubber overmold for the Apple Newton to our continuing work with a distinguished group of companies and designers, our focus is always on the customer experience and the craftsmanship involved with bringing new products to life.


Back in the summer of 1994, brothers Corey & Donovan Weber started crafting prototypes of what became our proprietary vacuum mixing chamber for the ProCAST process in their one car garage. Brought up by their grandfather Bud, a Detroit machinist, they set about creating an Additive Manufacturing focused model shop at a time when only SLA technology was commercially available. Staying focused on the burgeoning 3D printing space, while always making sure that product output was high quality and delivered on time, the Weber brothers succeeded in growing Forecast 3D. We began offering SLS & CNC in 1998, becoming one of the 1st DMLS service providers in 2007, added FDM and PolyJET in 2010, and became the official West Coast Experience Center for MJF by HP in June of 2017.

As one of the oldest and largest privately held facilities of its kind in the U.S., our focus remains on craftsmanship, our company culture and the customer experience. Today we have 49,000 square feet of manufacturing space, 150 employees, and more than 30 pieces of Additive & Subtractive Manufacturing equipment here to serve you. We appreciate your interest and are looking forward to working together.

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