Hello: I know that Schaff sells brass rails. $90 per section. Regards, Jim Dally ---------- > Has anyone had Schaff reproduce brass rails in the near past? I > have a Kimbell upright that needs this done and I wanted to know > if there are any problems associated with installing the new > rails and old flanges... > > Thanks in advance... > > David Ilvedson, RPT > Pacifica, CA > > > Date: Mon, 22 Jun 1998 14:59:48 -0500 > > To: pianotech@ptg.org > > From: Conrad Hoffsommer <hoffsoco@martin.luther.edu> > > Subject: Re: Brass Rails > > Reply-to: pianotech@ptg.org > > > At 12:05 6/22/98 -0700, you wrote: > > >Gregory Torres wrote: > > > > >I have heard that if you anneal brass (heat it to some temperature and > > >let it cool slowly), this cures the brittleness > > > > >> BTW, maybe someone can explain why stainless steel has not been used in > this > > >> type of application > > > > The metallurgists on the list surely can supply hardness numbers, but my > > guess is that the brass being softer than the centerpin does at least two > > things. > > > > Since ductile is opposite of brittle... > > 1. Flange will slightly mold itself around pin, affording a more secure > > clamping. > > 2. Being softer, it would also be quieter if flange is slightly loose. > > > > No facts to back me up, just some idle thoughts. > > Anybody who actually knows something wanna jump in? > > > > Conrad > > > > > > > > Conrad Hoffsommer Office - (319) 387-1204 > > Luther College Music Dept Fax - (319) 387-1076 > > 700 College Drive > > Decorah, Iowa 52101-1045 hoffsoco@martin.luther.edu > > > > Ignorance doesn't kill you, but it will make you sweat a lot. - Haitian > proverb > > > > > >
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