Most crucial is the rim-bending process, where 18 layers of maple are bent around an iron press to create the shape of a Steinway grand. Five coats of lacquer are applied and then hand-rubbed to give the piano its outer glow. The instrument then goes into the "Pounder Room", where each key is pounded 10,000 times to ensure quality and durability. H3ovLpRT9is5
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