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Laminated Inner Rim

Since it will hold most of the piano's parts, the wooden rim, or case, of the piano is made first. To make the curved shape of the piano, the wood must be bent. A single thick piece of wood can't be bent; it would break. Instead, sheets of wood one-eighth of an inch thick called veneers, which have been sliced off long pieces of wood, are glued together. This process is called lamination. The veneers are very easy to bend, and the laminated wood is stronger and more flexible than a single piece of wood.

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Many maple veneers are glued one on top of the other to form a slab of wood three and one-quarter inches thick. The last veneer to be glued on is an extra-thin slice of mahogany, which has the best grain quality and will look best on the outside of the case.

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The mahogany veneer is so thin and fragile that the glue must be brushed on by hand rather than applied by machine.

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