That might be the case I was referring more to issues of going from one manufacturer to another and having problems with the pin bottoming out. David Love www.davidlovepianos.com From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of erwinspiano at aol.com Sent: Sunday, November 29, 2009 6:31 PM To: pianotech at ptg.org Subject: Re: [pianotech] Oversized tuning pins Trix has mic'd many sets of both Japanese & German pins & the Japanese pins are always less accurate and vary more in size as a set with many of them being .002 thous under the actual stated size. The German Diamond pins are waaay more uniform and they hit the actual stated dimension. A no. 3 Japanese pin can vary say from .284 to .286 and a few at .287. A majority we find at .284. Now of course this can work for you depending on how the pin fits in the block. We use the fattest ones in the bass and smallest in the treble. Dale I don’t think it matters that much if you go from German to Japanese pins. David Love www.davidlovepianos.com <http://www.davidlovepianos.com/> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org <mailto:pianotech-bounces at ptg.org?> ] On Behalf Of PAULREVENKOJONES at aol.com Sent: Sunday, November 29, 2009 3:35 PM To: pianotech at ptg.org Subject: Re: [pianotech] Oversized tuning pins David: This is particularly true if one makes the mistake of mixing Oriental pins with standard or German pins. The profile of the pin-end is quite different with threading starting at quite different places, so that friction at the bottom of the pin is dramatically increased. P In a message dated 11/29/2009 4:42:56 P.M. Central Standard Time, davidlovepianos at comcast.net writes: It can also happen if the new oversized pin bottoms out where the original pin stopped. That area below the original pin is still the diameter designed for the original pin so when the new oversized pin gets down there it's too tight and worse, it's too tight at the bottom of the pin. David Love www.davidlovepianos.com <http://www.davidlovepianos.com/> -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org <mailto:pianotech-bounces at ptg.org?> ] On Behalf Of Al Guecia/AlliedPianoCraft Sent: Sunday, November 29, 2009 8:31 AM To: pianotech at ptg.org Subject: Re: [pianotech] Oversized tuning pins Scott, Yes, that's one of the possible causes, but there are others. Removing the old pins and creating to much heat (burning the hole). New tuning pins to large. And I'm sure there are hacks out there that can screw it up in other ways. Al -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091129/8132311f/attachment.htm>
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