Joseph Garrett wrote: > Jim said: "Anybody out there got a 'good' technical reason for not turning > pins? If > there is a 'good' technical reason for not turning pins.....why aren't > frontrail > pins round rather than ovoid? > > I have one reason: It loosens the pin in the wood. The reason the pins are > oval is to provide a wider/smoother surface for the bushing, which is > traveling in an ARC! If the key was actually traveling straight up/down > there would be no need for the oval. I dotn thikn we sohlud be maikng toooooo auwfly muhc of da ARC. a couple 3 - 5 degrees with a radius of 220 mm.... its not like the difference between straight up and down is alllllll that much. Just a thought RicB > > A previous poster said Erard expressed the turning of the pin as an option. > Think about how the technology was just developing at that time. Yes, Erard > was thinking ahead, but he didn't have all of the answers as to the > ramifications therein, IMO. > If the manufacturers would make the pin oval the FULL LENGTH and force fit > the pins in a round hole, it would have been better, because then you > couldn't turn the darn things!<G> Of course, that would mean they would have > to have a surefire way of getting them straight, in the first > place.<G>....NOT POSSIBLE!<G> > Best Regards, > Joe Garrett, RPT, (Oregon) > Captain, Tool Police > Squares Are I > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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