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Bosendorfer Piano; Design and Construction

What makes a Bosendorfer a Bosendorfer and why is it so expensive?

• The wood and felt that is rejected for the highest quality pianos would be used in most of the other pianos manufactured.
• Naturally dried wood: Wood is air dried naturally for 2-5 years (depending on thickness); rather than forced to dry quickly in a kiln which damages pores and decreases acoustic properties.
• This takes a large capital investment in materials.
• Large climate controlled rooms in the factory to store all woods after being machined and cut.
• Cast iron plate is sand cast which is a much more expensive process.
•  Plate is set outside to cure for several months before being used. This releases internal stresses that might produce warpage in the future.
• Agraffes with stainless steel pin give more consistent termination, provide easier tuning, and last longer.
• "T" nuts to mount pin block for added strength and stability.

Workmanship

• Workmanship: (time & experience)
•  Take your time:
• "The World's slowest Piano builders".
• 43,000 pianos built since 1828 - 256 pianos per year average.
• Produce 300 pianos with 150 employees (April 7, 1991 states Steinway NY built 2500 with 370 workers - almost 4 times per employee production).
•  Total time required to build a Bosendorfer - 62 Weeks in production (5 years if you include wood & plate aging time).
• Hand Craftsmanship.
• Attention to detail.
• Individually hand-made string loops.
• Hand wound bass strings.
• Hand notched bridges that are checked every few notes not twice on the bridge.
• Years of experience necessary for this job.
• Agraffes aligned individually to be 90° to the string.
• Bridge pins hand finished on top.
• Maximum quality control.
• Maintain experienced workforce Bosendorfer craftsmen are trained through a lengthy and rigorous apprenticeship program.
• 12 years required to go from apprentice to journeyman to craftsman, to foreman.
• Hire and train employees that are committed to your philosophy of excellence.

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