Isaac OLEG wrote: > > > Sorry to ask again but comes to my mind a question about felt used by > Ronsen, if you don't mind. > > I truly appreciate that Wurzen Filz (I believe that Renner have some > parts in the factory, it was in RDA, had new headquarters when > privatized in 91 , web site http://www.filzfabrik-wurzen.de/eng.htm > this was a well known place for felt for a long time)it looks like > Cashmere wool and gives a warm tone with a lot of body. > > I understood that Ronsen buy felt in France at Laoureux > http://www.laoureux.com/Page3.html , this felt is less resilient , > thinner (that may be interesting) , I've find it can't be needled too > much (fiber is not holding as much as the Wurzen IMO). > > Most probably Ronsen have tried any available felt and Wurzen also . > Abel say he stopped using Wurzen (for "some problems")but I understand > fairly well this kind of felt is not at all corresponding with the way > Abel presses their hammers (hard and compact, too much warmness and > pressure I guess) I suppose that Wurzen does not like to be violented > when pressing, and nowadays it will never be hard as the Abel > production are. > > I just wandered if you heard about this felt when talking with Ronsen, > and if you have tried some of these (This is the felt used on Renner > Blue for instance) > > I'll admit that probably this material in its actual presentation is > may be not allowing so much voicing possibilities as a thinner fiber > felt, but the tension is showing nicely and coming back after playing > if over needling have been done, as the fiber looks as some very > springy elastic coils, allowing always for a good rebound without the > need for hardeners or such. > > The technicians that like it ,as me , are probably looking for the > simplest way of "doing as less as possible ;>)" as a way of attaining > the necessary Zen attitude that lend to nice results !!! As it need > less preparation than some others and is a joy to needle I have find > it as a material of choice when repairing actions. The felt does not > seem to be carbonized, it is slightly yellow, and is not cracking > under the needles as the whiter felts, I don't know what is the result > in term of fiber longevity, but it may be possible that the > carbonizing is drying the fiber, so the resiliency hold less in time > (just wandering). > If you have some ideas about this I for sure will appreciate it. There > where a very nice felt on Bosendorfers hammers too, coming from > another felt maker in Germany, V.G.F. , no more information at this > moment but for sure I like to know a little more about this wonderful > material... > > Sorry for the long post , I type fast so I think and type at the same > time. > > Thanks in advance if you can clear me a bit. > > With best regards. > > Isaac OLEG Isaac, You obviously know a lot more about felt than I do. I am sure that Ronsen has tried various felt brands for their hammers. No doubt I have used these hammers in my rebuilding. I can't say that I have notice much of a difference in tone quality due to the quality or brand of felt. I do notice that the hammers have varied over the years in felt density and overall weight. I attribute most of the differences it tone I experience to these two issues. John Hartman RPT John Hartman Pianos [link redacted at request of site owner - Jul 25, 2015] Rebuilding Steinway and Mason & Hamlin Grand Pianos Since 1979 Piano Technicians Journal Journal Illustrator/Contributing Editor [link redacted at request of site owner - Jul 25, 2015]
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