precision-machining
(3)
Forge Automation (YC W25)
Forge Automation runs software-enabled factories that machine custom metal parts and ship them in four days or less. Engineers upload a CAD model to forgejobshop.com, get an instant quote, and pay online. Its in-house software, Foundry, automatically turns CAD files into machine-ready toolpaths, and customers can either order on-demand or reserve a dedicated CNC machine with a guaranteed production SLA. Founded in 2022 in Toronto by Timothy Seto and Walter Raftus, the company went through Y Combinator's Winter 2025 batch and serves hardware, robotics, and hard-tech teams from early-stage startups to Fortune 10 companies.
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.
MacLean-Fogg
MacLean-Fogg is a fourth-generation, family-owned American manufacturer founded in 1925 that grew from a single railroad lock nut into a global maker of fasteners, engineered components, plastics, and additive-manufacturing tooling. Headquartered in Mundelein, Illinois, the roughly $1.2 billion-a-year enterprise supplies the automotive, heavy-truck, electric utility, telecom, and industrial markets from dozens of plants across North America, Europe, and Asia. In 2025 it marked its 100th anniversary still owned and led by the MacLean family.