Case Study: Earlyhuman, LLC achieves cost-effective, scalable production of durable Tuning Forks that improve bow alignment with Xometry

An Archer Aims, Shoots, and Lands His Shot with Xometry Injection Molding

Earlyhuman, LLC — founded by hobbyist archer Keith Shetler — developed Tuning Forks™ to solve persistent bow-alignment and parallax problems that undermine shooting accuracy. After prototyping with 3D printing and raising over $13,000 on Kickstarter, Keith needed a manufacturing partner who could meet tighter tolerances, finer surface finish, and lower per-part costs, so he turned to Xometry for injection molding.

Xometry recommended and executed injection molding, iterating through sample runs to address warpage and optimize the design, and produced final parts in 13% glass-filled nylon with a fine, nonporous finish. Xometry’s solution lowered unit cost compared with 3D printing, enabled color finishing and accessories, and delivered scalable tooling Keith owns for an expected 5,000-part lifetime; the Tuning Forks perform across 32–400°F and reduce limb oscillation by 18%, allowing Earlyhuman, LLC to move from prototype to profitable production.