But if brass is softer than the steel music wire, and I presume softer than unhardened cast iron, then isn't the steel wire going to cut a groove into the brass capo insert? And isn't that what we're trying to avoid? Terry Farrell ----- Original Message ----- From: "Dean May" <deanmay at pianorebuilders.com> To: <pianotech at ptg.org> Sent: Thursday, March 05, 2009 8:43 AM Subject: Re: [pianotech] Capo Bars > Young Chang started doing this in the mid 90s, don't know if they still > do. > They used a brass rod instead of steel. Music wire on brass is self > lubricating. > > Dean > > Dean May cell 812.239.3359 > > PianoRebuilders.com 812.235.5272 > > Terre Haute IN 47802 > > -----Original Message----- > From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On > Behalf > Of Richard Brekne > Sent: Thursday, March 05, 2009 4:30 AM > To: pianotech at ptg.org > Subject: Re: [pianotech] Capo Bars > > Good question... and I'm looking forward to reading the replies. FTR, > Bohemia pianos, a spinoff of Petrof after the splitup of Czechoslavakia > actually did do this for a while... I'm unsure if they still do. They > used some kind of bronze alloy I believe. Perhaps its a question of > tooling and expense ? > > RicB > > > Why do manufacturers harden capo bars rather than cast (or grind) > the underside of the strut flat, rout out a groove to receive a > steel rod of proper radius, shape and hardness and insert it there > where it could, when it's worn, be easily changed and where the > consistency would be more easily controlled. Is there a compelling > reason not to do it that way? > > > > > >
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