Mass Magnetics

<!-- hacklab:yc-profile -- YC company profile USA-made magnetics for robotics and defense. Mass Magnetics turns recycled rare-earth scrap into high-performance permanent magnets…

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About Mass Magnetics

YC company profile

USA-made magnetics for robotics and defense.

Mass Magnetics turns recycled rare-earth scrap into high-performance permanent magnets, made in America. The materials we supply are the backbone of electric motors, sensors, speakers, hard drives, and electronics.
Our process enables DFARS-compliant magnets for defense, aerospace, and industrial manufacturers who demand domestic supply without compromising on quality.
Operations in Greater Boston, MA (Greentown Labs) and Columbus, IN.

YC batch: Summer 2026
Founded: 2026
Team size: 3
Location: Boston
Country: US
Status: Active
Industry: Industrials
Stage: Early
Tags: Hard Tech, Robotics, Drones, Manufacturing, Defense
YC partner: Vivian Midha Shen

Founders

Eric Silver — Founder/CEO

Founder at Mass Magnetics. Worked in pilot cathode production for lithium-sulfur battery chemistries. Now I'm fixing American magnet supply chains.

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Matthew Groll — Founder/CTO

Co-founder and CTO at Mass Magnetics. Former NASA/Columbia/MIT. Previously worked on thermal systems and guidance/navigation at NASA Johnson Space Center for ISS and Artemis lunar missions. Also previously worked as a Member of Technical Staff at Draper Laboratory. Studied Mechanical Engineering at Columbia, captaining the Formula SAE team and Robotics Club, then earned a Masters in Manufacturing from MIT.