John Prosock Machine, Inc. is a CNC machining company based in Pennsylvania (PA) since 1982. Our machine shop is dedicated to the highest standards in both CNC machined parts and customer service. Customers of John Prosock Machine get more than superior machining: they get a company that is dedicated to building lasting business relationships. If you want a company who is more than a machine shop, it's time to get to know John Prosock Machine, Inc. High-quality CNC machining is more than providing parts at a reasonable price: it's about providing the customer with the exact parts they need through an exceptional customer service experience.