Formlabs Expands Additive Manufacturing Reach with Fuse 1 SLS Printer January 26, 2021 Formlabs, known for its line of desktop stereolithography (SLA) printers, is looking to expand its 3D printing reach with availability of its new Fuse 1 benchtop industrial selective laser sintering (SLS) 3D printer. Under development for nearly seven years, the Fuse 1 marks a notable change for Formlabs as they expand into a new additive manufacturing process.