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Grand Piano Action Regulation: Glide Bolt Adjustments

glide_bolt_3One of the first important steps in grand piano action regulation is the adjustment of glide bolts. The glide bolts sit at four points distributed lengthwise along the center rail of the grand piano action. They have a tuning-pin-shaped protrusion towards their top, a central threaded portion that allows for up-down adjustment, and smooth rounded bottom. The bottom of the glide bolt both provides support for the center rail of the action and allows the piano to easily glide from left to right when the una cord pedal is depressed. Continue reading

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Filed under Arequipa, Glass Piano, Learning about Pianos, Peru, Piano Action, Piano Maintenance, Piano Repair