I am going to service a piano where the hammer felts have come loose from the core on one side. I tried contact cement and superglue with no success. My method is to apply the glue then tie the hammer tightly with waxed string. I leave the string there so the glue dries thoroughly until the next appointment. At the next appointment I remove the string and the hammer felt pops back up. I think the superglue wicks up into the felt and contact cement just doesn't have the strength. Any suggestions would be most welcome. ted simmons independent piano technician
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