Fortify vs Mallinda

Fortify was a Boston additive-manufacturing startup that used magnetic field-alignment of fibers during DLP printing to make high-performance composite and dielectric parts; it wound down and its IP was acquired by Tethon 3D in March 2026.

Mallinda makes Vitrimax vitrimer resins that give composites thermoset strength while letting them be reshaped and fully recycled back to monomer.