hard grand hammers

[Richard Wolff]

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Any comments on the following procedure (this came up during Ken Jones' =
presentation at the St. Louis seminar):
To soften hard hammers, saturate them with acetone, actually forcing the =
acetone down into them with a modified vacuum crevice tool shaped to =
match the hammer end.  I'm wondering if this is a general rule, or is it =
just for Steinway hammers?  Will it work on Asian pianos?=20

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