Description Founded in 1991 and headquartered in the heart of Silicon Valley in San Jose, CA A-1 JAY'S MACHINING provides precision machining and product assembly and finishing. We are well known for the high value we provide our customers through our cost effective and ultra precise machining, precision crisis response, project management and superb quality fulfillment. We service the medical, solar, semi-conductor, engineering, automobile and hi-tech industries spanning the globe.