Sinter
Accelerating scaled plastics with additive technologies
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.
Voodoo ManufacturingW17AWS for manufacturing.Shared: 3d printing, manufacturingInactive
KaraS26Making Diamond SemiconductorsShared: manufacturing, advanced materialsActive
Relativity SpaceW16Building humanity’s multiplanetary future.Shared: 3d printing, manufacturingActive
Atomic IndustriesW21Software orchestrated mass production of plasticsShared: manufacturingActive
DuraniumS25Reshoring critical metal productionShared: manufacturing, advanced materialsActive
Also from F26
Batchmates in Fall 2026.
FaradayF26Industrial aOS between humans, agents, and robotsActive
Shepherd RoboticsF26Robots for high skilled labor powering AI infrastructureActive
SuperRadiantF26Embodied Scientific IntelligenceActive
Agent 37F26Persistent sandboxes for agents like hermes, openclaw, claude codeActive
Agent RelayF26The infrastructure to run coding agents for your teamActive
antimattrF26voice-first hardware interface for human-agent interactionActive
About Sinter
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.
El Segundo, CA, USA
Sinter: questions
Which YC batch was Sinter in?
Sinter was in Y Combinator's Fall 2026 batch (F26).
Is Sinter still active?
Y Combinator lists Sinter as active.
Where is Sinter based?
Sinter lists El Segundo, CA, 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.