Abstract: A manufacturing process for establishing optimal operating limits, which are a percentage of a specified or blue-print tolerance, for the critical characteristics of manufactured products. The process begins a selection step for establishing an operating range based upon a percentage of tolerance for the critical characteristics of the manufactured product. The next step of the process is the manufacturing step including; making a determination as to whether the manufacturing apparatus is capable of operating within the proposed operating range, evaluating the fitness of the materials, manufacturing the products within the proposed operating range, and measuring the critical characteristics of the manufactured products. The process is audited to verify that product critical characteristics are maintained within the operating range. Any products whose critical characteristics are not within the operating range is rejected and is not offered for sale to customers in the relevant market.