StewMac Tuner Pin Drill Jig

Our Tuner Pin Drill Jig aligns your hand drill for accurate tuning machine mounting pin holes.

This anodized aluminum jig accurately locates mounting pin holes in the back of a guitar headstock. Use it before drilling for the alignment pins found on many modern enclosed tuning machines. These tuners don't use the traditional exposed tuner mounting screw, but rather a hidden pin on the underside of the tuner housing.

It keeps your hand drill perpendicular for accuracy, and works for left or right-side tuners. You can position single-pin Schaller tuners, two-pin Schallers, one-pin Sperzels, and Fender locking tuners. The jig fits into the peghole with a self-centering bushing and thumbscrew for quick and easy attachment. Instructions included.

This jig is designed for use with a No. 38 (.101") drill bit for all holes except for the Schaller M6 two pin, which requires a No. 42 (.093”) drill bit. Measure the height of the alignment pins on your tuners and drill the holes to the appropriate depth.