One of my clients had a spinet with about 30 "butterfly" hammers. I removed the action to my shop and reattached the hammer felts to their wood cores with hot -melt- glue; the kind that comes in sticks fed through a gun. It is fast and very strong. The glue is thick enough that it is not absorbed into the felt and no clamping is needed. Carman Gentile RPT Redwood Chapter
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