A pilot hole for this tap can be drilled with a 3/64" drill bit - that's a commonly-available drill bit in the US and Canada. In most cases, the rivet hole is already the perfect size and no further drilling is needed.
To use this tap, I recommend you use a tap handle or pin vise. I can provide one if needed.
You don't need bulky, expensive and complicated equipment to tune your harmonica with great precision. The French Tuner™ helps you use your mouth and ears to quickly tune the blow reed plate of a diatonic harmonica. The French Tuner™ helps you eliminate beating and provide smooth chords.
A Marine Band 1896 harmonica is held together with nails. You can convert it to all-screw assembly. Fasten the reed plates to the comb without having to use nuts by using a tap to make threads into which you can turn a screw. This tap is for 1.6 mm screws.
A pilot hole for this tap can be drilled with a 3/64" drill bit - that's a commonly-available drill bit in the US and Canada.
A Marine Band 1896 harmonica is held together with nails. You can convert it to all-screw assembly. Fasten the reed plates to the comb without having to use nuts by using a tap to make threads into which you can turn a screw. This tap is for 2 mm screws.
A pilot hole for this tap can be drilled with a 1/16" drill bit - that's a commonly-available drill bit in the US and Canada.