Replacing Crumbling Vintage Tuning Machine Buttons

Shrunken, crumbly, plastic tuning machine buttons are not uncommon on vintage instruments. As it ages, plastic breaks down. This makes the plastic brittle. Eventually, the tuning machine’s buttons deteriorate to the point that they can no longer hold up to the pressure exerted upon them from normal use. If forced, they may fall apart entirely. This can make restringing or even simply tuning the instrument impossible

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