Retail ecommerce

Layer By Layer

Website

Layer By Layer is an online marketplace for the buying, selling, and sharing of printable 3D designs. We're going to make it possible to get the things you need and want by printing them yourself, from your own home. We want to allow anyone, technologist or amateur, to be able to use a personal 3D printer - so we decided to create an easy way for p

Overview

Layer By Layer is an online marketplace for the buying, selling, and sharing of printable 3D designs. We're going to make it possible to get the things you need and want by printing them yourself, from your own home. We want to allow anyone, technologist or amateur, to be able to use a personal 3D printer - so we decided to create an easy way for people to find and print great products.

Company description As recorded 2026-11-08
Retail ecommerceMarketplaceConsumersConsumerMarketplace

Founders & team

Jon Miller Schwartz

Founder/CEO

Building intelligent-industrial robots at Ultra. Prev Arena AI, Voodoo Manufacturing (YC W17), Body Labs, and Layer By Layer (YC S13).

LinkedIn X
Founder profile As recorded 2026-09-15

Max Friefeld

Founder

Max is the co-founder and COO of Ultra. He studied Computer and Electrical Engineering at Harvey Mudd College ('13), and founded two YC-backed companies, Layer By Layer (S13) and Voodoo Manufacturing (W17). Immediately prior to starting Ultra, Max led teams at Boston Consulting Group optimizing operations for the largest logistics networks in the world and developing go-to-market strategy for private equity backed robotics companies.

LinkedIn
Founder profile As recorded 2026-09-15

Oliver Ortlieb

Founder/CTO

Oliver is the co-founder and CTO of Ultra. Before co-founding Ultra, Oliver Ortlieb was the Co-founder & CTO at Voodoo Manufacturing where he built the software and systems to support one of the largest 3D printing factories in the world. Prior to that, he co-founded Layer By Layer, a secure marketplace for 3D-printable products. He holds multiple patents in the field of 3D printing, and received his BS in Computer Science from Harvey Mudd College.

LinkedIn
Founder profile As recorded 2026-09-15
2team members reported
Source-reported As recorded 2026-09-15

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA; Mountain View, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The source reports an inactive or acquired company; current product identity needs review.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced people
startup.observe Directory coverage · Sources & method