Upside Parts LLC

Upside Parts is an in-house additive manufacturing and rapid prototyping company based in the Greater Boston area. We help hardware teams move from concept to real parts quickly with FDM, SLA, and SLS 3D printing. We also support clients with low-volume production, including urethane casting, when projects scale. We work with startups, robotics and autonomous systems teams, product development engineers, and manufacturers that need accurate, functional plastic parts on short timelines. Customers can upload files for instant quoting, then work directly with our team on material choice, printability, and process selection. Our focus is engineering-grade plastics, fast turnaround, and clear communication. We support teams in Boston, across Massachusetts and the U.S.