Sinter YC Application
El Segundo
Sinter went through Y Combinator in the Fall 2026 batch as a Industrials company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.
- YC batch
- Fall 2026
- Industry
- IndustrialsManufacturing and Robotics
- Location
- El Segundo
- Team size
- 2
- Status
- Active
- Launched
- 2026
Founders
Oliver JohnsonFounder/CEO
Justin KwonFounder/COO
What Sinter does
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.
Sinter's YC application, reconstructed
Y Combinator application
Sinter, Fall 2026 batch. The real form questions, answered from public data.
- Founders2
- Company7
- Progress7
- Idea4
- Equity3
- Curious2
- Batch Preference1
Company
Sinter
Faster, affordable scaled plastics with additive tech
Sinter builds an American plastics pipeline for hardware teams who need to move quickly from prototypes to production parts. Our system cuts the time and cost to go from an additive design to real, usable production-scale plastic parts - so teams can get from prototype to product in weeks, not months. We use new additive technologies and process optimizations to do what traditional contract manufacturing can't. We make it easy for customers to go from iteration to scaled manufacturing without delay.
We live in El Segundo, CA, and the company is based here.
We're in El Segundo because that's where hardware gets built, and our ops run best close to the teams who need parts fast.
21 more answers in the full application
Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.
Frequently Asked Questions
Is this the real Sinter YC application?
No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Sinter's public data (launch notes, founder backgrounds, product description). It shows how a company like Sinter would present itself to YC, not the text they submitted.
What YC batch was Sinter in?
Sinter was part of the Y Combinator Fall 2026 batch.
Who founded Sinter?
Sinter was founded by Oliver Johnson, Justin Kwon.
What does Sinter do?
Accelerating scaled plastics with additive technologies
How do I read the full reconstructed application?
Create a free Round Funded account. The full 26-answer version of Sinter's application, and every other YC batch, is in YC Insights.
