Scroll down, lots of photos!
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Removing old action parts. Hammers, shanks and flanges are removed.
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Rebushing keys with precision cauls .002 over pin size for proper fit.
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Installing new regulating buttons, note rails have been stripped of all old components and bead blasted.
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Repairing old ivory.
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New whippens installed on action frame.
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Repinning new parts as necessary for proper friction.
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New sample hammers are weighed to determine amount of machining necessary for new hammers.
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Gram gauge used to determine amount of friction at center pin.
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Installing new shanks.
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Determining strike point of hammers on string for best tone in alto and treble.
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Boring new hammers. Bore distance is computed by subtracting hammer center pin height from string height.
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Tail of hammer is trimmed to provide a one inch tail for proper checking.
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Hammers are tapered head to tail for weight reduction and clearance.
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Hammers are coved on underside of tail for weight reduction.
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Back of tail is arced to a radius (about 2 3/4") for proper checking.
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Hanging hammers with hot animal hide glue.
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Reconditioned key frame with new felt and polished and lubed pins.
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Setting the key travel, also known as laying the touch. A 400 gram weight is used on each key for consistency.
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