Sinter
Sinter is a YC Fall 2026 (F26) company. Based in El Segundo, CA, USA. Team of 2.
About Sinter
Summary
Sinter builds a full-stack plastics manufacturing pipeline for iteration-heavy hardware teams, taking them from same-day additive prototypes to small-batch injection-molded production parts on week-scale timelines. It replaces the slow, capital-intensive path of committing to expensive tooling or standing up in-house capacity, letting engineers revise designs and swap molds during active production runs.
Go-to-market
Hardware engineering teams engage directly, with self-serve exploration of capabilities and direct contact for quoting, targeting teams that need to move fast without locking in tooling commitments early.
From the Y Combinator listing
Accelerating scaled plastics with additive technologies
Sinter is a radically faster plastics pipeline, helping iteration heavy hardware teams evolve from prototypes to production parts on week-scale timelines.
Facts
- Industrials / Industrials -> Manufacturing and Robotics
- El Segundo, CA, USA
- 2
- Active
- Early
Founders (2)
- Justin Kwon
- Oliver Johnson
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