sheet-metal
(3)
Prototyping.io
Prototyping.io is a San Francisco startup (YC Spring 2026) building an AI-native manufacturing platform that turns CAD designs into finished mechanical parts in as little as one day. It automates the traditionally manual path from design to production - DFM analysis, sourcing, process planning, machine programming and setups - so hardware teams can iterate in days instead of weeks. The company serves customers from early-stage startups to multi-billion-dollar enterprises across robotics, AI infrastructure, energy, automotive and defense.
YC Precision Fabrication
YC Precision Fabrication is a York, Pennsylvania precision sheet metal fabricator operating under the York Corrugating Company name since 1902. From a 125,000 sq. ft. facility, the roughly 11-employee (some directories list 100-249) contract shop runs MAZAK lasers and TRUMPF automatic punch presses with lights-out automation, offering laser cutting, CNC punching, press brake bending, shearing, welding, assembly and finishing to military, heavy equipment, automotive, elevator, HVAC and appliance customers under ISO 9001:2015 certification.
Stratus
Stratus is a cloud-based BIM-to-fabrication platform built for MEP (mechanical, electrical, plumbing) contractors. It connects the digital model - Revit, AutoCAD and Autodesk Fabrication - to the prefab shop and the field, handling spooling, smart labeling, bend sheets, weld maps, material tracking and real-time productivity metrics so trade contractors can move from design to installed pipe, duct and conduit with less waste and fewer manual handoffs. Developed by GTP Software, Inc. (formerly GTP Services), Stratus serves large mechanical and sheet-metal contractors across North America and raised a $32M Series B in 2025.