---------------------- multipart/alternative attachment We were fortunateto become friends with Seigfred Hoffman, Director of manufacturing for Renner Co. in Germany. We had been unhappy with the great amount of glue being used between the underfelt & the top felt in their Hammer. This glue did in effect decrease the amount of felt that was usable as a tone producer on the Hammer & decreased the dynamic range , plus caused "hard" sound on a forte blow. We sent him samples of Hammers that were made many years ago that did not have any glue between the under felt & the top felt, Barely a 1/4" directly on top of the center of the Molding. He surprised us by saying, "that is the way we made Hammers, years ago". & so they no longer have glue at that location. The other problem wefee is that some of the Hammer sets are being hot-pressed too hard & it is killing the resiliency of the wool. After all the reason that wool works well on a piano Hammer is because of the ability to bounce away from the String. Try holding some Hammers from a height & dropping them on a hard surface & you will finf that some kinds will bounce better than others. The other most important requirement of Hammers is that they wear well under sustained use & I think you will find that not all of them do wear well. I wish that they did not bleach the wool, but, we can't have everything! I will give a report on the Ronsen Hammers. They are good people & come from a long period of time in the Hammer making industry. We have sizeable backlog of signed contracts on hand & all of it is with private customers. They are all complete remanufacturing jobs, with no "cut corners". Takes a long time to get "there". This piano Tech List is wonderful!. Yes, it is having "growing pains" but it is very helpful & keeps us in touch with each other. As for "having fun", I can't wait to get up in the morning & get my hands on somebody's piano, because I know that it will be better after we are done. Just think of this: The customer invites us into their home, treats us with respect, allows us to do what we enjoy (work on the piano) & then when we are finished, they PAY US!!. What a system. I will try later to write some info about Piano Plate suspension system (Baldwin), as I was responsible for the granting of a royalty free use of their system to RPT's in their rebuilding. More later-Will ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/c0/22/0f/05/attachment.htm ---------------------- multipart/alternative attachment--
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