Hi Clyde, You bring up a good point. Not only can hole size and quality be different from hole to hole, but if we all got out our micrometers and a set of the cheapest tuning pins money could buy, we'd probably all be shocked to find out how much variation there would be from pin diameter to pin diameter. >From what I've measured for myself, I've seen variations of up to .002" between tuning pins. (some may be much worse.?) It doesn't sound like much, but it can make a difference. Especially if a .002" small pin is placed in a .002" large hole (a slight wobble of the bit?. Good point. It's easy to consider a tuning pin of a particular size as a constant, when indeed it may not be. Variables, variables. They're almost endless. :-) But that helps keep this thing interesting, huh? Good to see you again, Clyde. Brian Trout Quarryville, Pa. -----Original Message----- From: Clyde Hollinger <cedel@redrose.net> To: pianotech@ptg.org <pianotech@ptg.org> Date: Thursday, June 24, 1999 7:49 AM Subject: Re: new piano pin replacement >Roger and Glenn, >If the block is solid, is the problem with the torque caused by uneven >hole size or by differing pin diameters? Are the tuning pins ever the >culprits in situations like this? > >Clyde Hollinger > >Roger Jolly wrote: > >(snip) >> IF the block is solid, a new piano should be hand reamed with a #3 >> under sized drill bit and repinned to attain even torque. >(snip) > >> At 09:33 PM 23/06/99 -0600, you wrote: >> >> I have a situation and I need some advice. The small shop I >> do work for sells Shuberts. Well, partially from my >> pleading, he decided not to order any more. It seems he is >> stuck with the ones he has. One in particular, and I talked >> about this one here a long time ago, will not hold tune. I >> recommended he return it to the factory or distributor. Of >> course he got a difficult time and it is still here. The >> distributor (or factory rep, whatever) told him to get an >> estimate from "me" for repinning it. I really don't want to >> get involved. The pin torque varies wildly (I don't have a >> gauge - just feel) and the angle of the pins changes >> dramatically. IF the pinblock is not split anywhere I feel >> it needs reaming before repinning or else I feel the problem >> will just exist again, only a little tighter. I've never >> done this before. I've restrung two grands and neither >> involved reaming. I don't know how well I can do replacing >> strings with "old" coils on them. I've never done a >> vertical. >> >> I told him, after the second tuning, that I never wanted to >> see that piano again. Now he wants me to repin a brand new >> piano. I was taken back when he and the distributor wanted >> me to dope it. Now I think if I do anything I would just >> rather hit the loose pins with CA and the heck with it. I >> feel like an angry bee is chasing me! >> >> Any advice here? Feel free to throw out estimates numbers >> (in private emails if that upsets the board). >> >> Thanks, >> >> Glenn. >> >> Roger Jolly >> Baldwin Yamaha Piano Centre >> Saskatoon and Regina >> Saskatchewan, Canada. >> 306-665-0213 >> Fax 652-0505 > >
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