Sam, I am catching up on older mail, but wish to strongly second Keith's remarks. Of course, you can always have someone make some special reamers... OK. I'll leave. Horace At 11:10 PM 4/5/97 -0600, you wrote: >>SGrossner@aol.com wrote: >>> >>> Dear List: >>> >>> I am about to restring a Chickering grand. The block is good, and I intend to >>> use 4/0 pins. I was set to ream for new pins, when I noticed the holes are >>> tapered so as to get tighter the further down you drive them. The reamer I >>> have, a spoon bit, would eliminate that taper. Something I hesitate to do... >> >>> Regards, Sam Grossner, chicago. >> >>Sam, >> >>The tapering probably went a long way toward allowing the pins to slip, >>because the wood is not pressing equally throughout the length of the >>pin. I would straighten it out without a qualm! Make sure you use a >>3/0 reamer and not a 4/0. I'm assuming 2/0 is what you are removing. >> >>Hope this helps, >> >>Warren Fisher > >Sam, Warren, List, > >Your reason to hestitate to ream these tapered holes is well justified, >Sam. I'd verify the original tuning pins and see if they weren't tapered >as well. > >I recall a Bosendorfer class I attended many years ago tht spoke >specifically to the tapered design as a very special feature. It allows >setting the pins ever so slightly to increase frictional holding power. To >ream these tapered holes out removes that feature permanently. > >Sincerely, > >Keith A. McGavern >kam544@ionet.net >Registered Piano Technician >Oklahoma Chapter 731 >Piano Technicians Guild >Oklahoma Baptist University >Shawnee, Oklahoma, USA > > > > Horace Greeley Stanford University email: hgreeley@leland.stanford.edu voice mail: 415.725.9062 LiNCS help line: 415.725.4627
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