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The bridges of the piano are not only a medium to
transfer string energy to the soundboard, they also keep the strings
stable. To handle the pressure of the strings, the bridges must be
made of the hardest possible wood.
Bridges are recapped with rock maple wood, cut from
high quality straight grain planks. They are hand chiseled for a precise
determination point for string positioning.
The strings are attached to the cast-iron frame.
Therefore the frame must withstand approximately 20 tons of string
tension. Great care in handling and storing the frame is maintained
until it is reinstalled into the piano casing just prior to stringing.
The frame is carefully sanded, undercoated, rebronzed
and hand lettered. The agraffes are removed, cleaned and carefully
inspected for defects and damage before installing. Defective agraffes
are replaced.
The final phase of the inside rebuilding process
is the stringing of the piano. The finest German Roslau steel strings
are used. The bass strings are duplicated
to the accurate specifications required by each instrument.
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