Mass Magnetics
YC S26Boston, US · Founded 2026 · 3 employees · 1 known investors
Mass Magnetics manufactures high-performance neodymium-iron-boron rare-earth magnets in the United States from recycled and domestic feedstocks, using a rapid sintering process and machine learning to sort scrap by grade and chemistry. It targets defense and industrial buyers needing DFARS-compliant domestic magnets and also sells DFARS-compliant rare-earth alloys to domestic metallurgists.
Also known as Mass Energy Company
Advanced ManufacturingCircular EconomyNew MaterialsHard TechDronesManufacturingUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (S26)
Mass Magnetics was founded in 2026 by Matthew Groll and Eric Silver.
MG
Matthew Grollin𝕏FounderCo-founder and CTO of Mass Magnetics who previously worked on thermal systems and guidance/navigation at NASA Johnson Space Center supporting ISS and Artemis lunar missions, and served as a Member of Technical Staff at Draper Laboratory. He studied Mechanical Engineering at Columbia, where he captained the Formula SAE team and Robotics Club, and holds a Master's in Manufacturing from MIT.
Investors · 1
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Frequently asked questions
- What does Mass Magnetics do?
- Mass Magnetics manufactures high-performance neodymium-iron-boron rare-earth magnets in the United States from recycled and domestic feedstocks, using a rapid sintering process and machine learning to sort scrap by grade and chemistry. It targets defense and industrial buyers needing DFARS-compliant domestic magnets and also sells DFARS-compliant rare-earth alloys to domestic metallurgists.
- Who founded Mass Magnetics?
- Mass Magnetics was founded by Matthew Groll, Eric Silver in 2026.
- Who are Mass Magnetics's investors?
- Mass Magnetics's investors include Y Combinator.
- Where is Mass Magnetics headquartered?
- Mass Magnetics is headquartered in Boston, US.