YCS26ยท OtherMass Magnetics
USA-made magnetics for robotics and defense.
Founders
Not read from YC yet; the weekly run fills these in.
Same space
Competitors
Closest in what they build, same category.
Adjacent
Overlapping tags, a different niche.
Greypoint IndustriesS26Building drone swarms that hunt hidden enemies.Shared: robotics, drones, defenseActive
GUILDS26AI-Native Defense ContractorShared: manufacturing, defenseActive
TheseusS24GPS Denied Navigation for DronesShared: robotics, drones, defenseActive
OrnadyneX26We're building robot birds for surveillance.Shared: robotics, drones, defenseActive
Lucid BotsS19We build robots for dull, dirty, and dangerous jobs.Shared: robotics, drones, manufacturingActive
Also from S26
Batchmates in Summer 2026.
Synapse SemiconductorS26New semiconductors that merge compute and visionActive
UltrasoniumS26Metal manufacturing, faster, cheaper, and more versatile.Active
Libra RoboticsS26Robotic crews for large-scale infrastructure constructionActive
Moving AtomsS26Virtual Reality for Training RobotsActive
NeuromorphicS26Building robots to automate wetlabsActive
PacificS26Mass-producing and financing micro data center incredibly quickly.Active
About Mass Magnetics
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.
Boston, MA, USA
Mass Magnetics: questions
Which YC batch was Mass Magnetics in?
Mass Magnetics was in Y Combinator's Summer 2026 batch (S26).
Is Mass Magnetics still active?
Y Combinator lists Mass Magnetics as active.
Where is Mass Magnetics based?
Mass Magnetics lists Boston, MA, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.