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Sinter

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Accelerating scaled plastics with additive technologies

F26·Fall 2026·Industrials·El Segundo, CA, USA·Team of 2·Founded 2025

About

Sinter is creating a faster and radically more affordable American plastics pipeline, helping iteration heavy hardware teams evolve from additive prototypes to production parts on week-scale timelines.

Founders

  • Oliver Johnson· Founder/CEO

    Sinter F26

  • Justin Kwon· Founder/COO

    Founder at Sinter (YC F26) looking to expedite plastics manufacturing. Previously Mechatronics at Shinkei Systems working on robotic fish processing and SWE at Manifold Labs working on FSDP model training.

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