"Max's cardboard shim" technique method for loose tuning pin

[maxim_tuner]

The primary purpose of a cardboard shim for a loose tuning pin is to enhance the grip between the pin and the wooden components of the piano, namely the bush and pinblock. With the installation of a cardboard shim between the pin and these components, there is an increase in surface friction which strengthens the security of the pin, preventing it from slipping or moving.

It is worth noting that the method of tightening a pin is crucial to its stability. The use of a T-bar wrench to screw the pin, rather than hammering it, is a more precise and delicate approach there. Hammering can exert excessive force, leading to an uneven and insufficiently secure pin.

By manually screwing in the pin and creating additional grip with the cardboard shim, the attachment of the pin can be more even, and the piano's high-quality sound can endure longer. However, before attempting any techniques such as "Max's cardboard shim," it is always recommended to seek the advice of a professional piano technician, especially when it concerns tuning or repairing your piano.https://youtu.be/SqYdjUbCpak