>Why are so many piano makers still using the butterfly type rep. lever >spring? It has proven to be the best design from a repetition standpoint. Once learned, techniques for adjusting are quick and easy. It's also elegantly simple in construction. If your having trouble adjusting the butterfly type spring, seek the advice from someone who know's how to adjust them. My best tool is made from a mute wire handle, copied from a regulator at Steinway. D Stanwood David C. Stanwood Stanwood@tiac.net West Tisbury, Massachusetts USA On the Island of Martha's Vineyard "The art in hammer making has ever been to obtain a solid, firm foundation, graduating in softness and elasticity toward the top surface, which latter has to be silky and elastic in order to produce a mild, soft tone for pianissimo playing, but with sufficient resistace back of it to permit the hard blow of fortissimo playing." - Alfred Dolge 1911
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