First, the guitar body is placed in a specialized jig or fixture that holds it securely in place during the installation process. The neck of the guitar may either be attached or separate at this point, depending on the demanding of specific production process.

Next, the tuning knobs are installed on the headstock of the guitar. This involves drilling holes in the headstock where the knobs will be placed, and then inserting the tuning knobs into these holes. The knobs are typically secured in place using screws or nuts that are tightened onto the threaded posts of the tuning machines.

Once the tuning knobs are installed, the guitar's strings can be added. This process involves threading each string through the appropriate hole on the bridge and then pulling it taut over the fretboard and nut of the guitar. The strings are then wound around the tuning knobs and tightened to the desired tension.

After the strings are attached and tuned, the guitar is typically inspected to ensure that everything is properly installed and adjusted. This involves making adjustments to the string height, nut slots, or other components to ensure that the guitar plays properly. The process of installing tuning knobs and stringing guitars is a critical part of the guitar manufacturing process, and requires a high level of skill and precision to ensure that the final product meets the professional guitar quality standards.