HOOOORAY for Wim! For being one of the few techs who is willing to share a realistic time estimate for restinging (repinning) a piano for the first time. The first time I strung a piano took me 20 hours. I think your estimate is right in the ballpark. That having been said, I've also been on a cruise ship where two guys restrung (new pins) a Yamaha C3 in three hours. Nice job too. I wish I could tell you how they did it, but I couldn't see much because they were moving so fast..... Terry Farrell On Oct 28, 2010, at 6:11 PM, tnrwim at aol.com wrote: > Paul > > A long time ago there was a new Samick grand at a dealer with loose > pins. They opted to have me repin the piano. But that was Samick. > I'm surprised that Schimmel would opt for that solution. > > The reason the pins are loose is because during the drilling process > at the factory, the bit became dull, which caused the sides of the > hole to burnish. So when you replace the pins, you will need to ream > out the holes, or at least brush them clean with a 22 caliber rifle > bore cleaner. Do 6 notes at a time. As was suggested, you need to > make sure you keep the string separated. Release the tension one > turn, then remove the beckets for six notes, and then remove the > pins with a drill. I would go with one size larger pins, and pound > them in leaving enough room to turn them 2 turns after replacing the > beckets. . > > You want to do this in your shop. You don't want to take all your > tools to a customer's home, and you don't want to have them seeing > your mistakes, which you will make the first two hours of doing this > work. Since this is your first time doing an entire piano, I would > plan on three days of work, including retuning the piano 4 times in > your shop. You will also need to charge Schimmel to tune the piano > in the customers home 4 times over a period of sixe months. You > might also wind up breaking a few beckets, so that will also have to > be dealt with later on. > > Good luck. You'll gain a lot of experience with this, so it's nice > to have someone pay for your learning a new job. > > Wim > > > -----Original Message----- > From: paul bruesch <paul at bruesch.net> > To: Pianotech List <pianotech at ptg.org> > Sent: Thu, Oct 28, 2010 8:14 am > Subject: [pianotech] Re-pinning > > I have a customer with a quite new (3-4 years old) Schimmel K120, a > nice ~47" Studio. Nice, except that virtually all the tuning pins > are barely tight enough to hold pitch, which of course makes it > unpleasant to tune. > > I am in contact with Schimmel about this. They want to send me a set > of oversize pins. I suppose anything would be an improvement, but I > have a few apprehensions/questions/concerns... > > (1) I've never re-strung, nor re-pinned, an entire piano. I have > replaced single pins here and there, and a dozen or two on an > instrument (an S&S "B" that should have been getting rebuilt > instead). On the dozen-or-two piano, I had a heck of a time tuning > up to pitch when I replaced both pins of one wire. Should I replace > one at a time? i.e. pull one pin, (ream/chase... see #2,) replace > with new, pull up to pitch, pull other pin, lather rinse repeat? > Seems like an incredible amount of tool-changing. > > (2) There's been much discussion on this list about reaming > (chasing) for new pins on a restringing job, and about PDF/resin for > driving the new pins. Any opinions as far as either of these topics > for repinning a nearly-new piano? > > (3) For removing the old pins, would backing them out with a power > drill generate too much heat? The alternative, manually backing out > 200+ pins, seems like an incredible time suck. > > (4) How much time should I plan on, particularly given this is my > first experience?? > > (5) Would the results be significantly better than CA'ing the block, > and worth the effort? I do think that CA'ing a nearly new block > sounds like a sacrilege! > > I do have a tilter which I would think I definitely want to use. > > Thanks much, > Paul Bruesch > Stillwater, MN > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20101028/687f81dc/attachment-0001.htm>
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