I was taught that you can create a Steinway key leveling stick by putting a wooden stick on top of a center pin, clamping down both ends of the stick to curve it, and then planing the top level. When you release the clamps, the stick will return to the curve you need. Kind of puts the curve radius into perspective. A center pin thickness over four feet? I don't even need to do the math... --Cy-- Cy Shuster, RPT Albuquerque, NM www.shusterpiano.com www.facebook.com/shusterpiano
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