This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment I am not Mr. experience, but that won't stop me from plaguing you with = my thoughts! ;-) I would definitely recommend that you redrill the pin holes. The = relationship between the bit size and pin size will vary depending on = the type of block and the drilling methods. Do a search in the archives = and you will find all sorts of suggestions for where to start. Start = conservative (use a bit that might be on the small side) and drill. Try = the 3/0 pins first. Start at A0, drill the hole and pound the pin. Test = the feel before you go any further (and maybe, just in case you are way = off in fit, try turning the pin after you pound it in half way - if it = is too tight at that point, just turn the darn thing out and drill out = the hole with a bigger bit). Adjust as necessary. You can patch up the = first few with the 0.288 if need be, and you will likely have a good = combination for fit within the first few pins. Remember to use good = support underneath and mic the pins first. Terry Farrell ----- Original Message -----=20 From: Tom Driscoll=20 To: pianotech@ptg.org=20 Sent: Tuesday, January 20, 2004 1:01 AM Subject: tapered tuning pins List, I'm replacing bass strings on an older 5'10" Henry F = Miller grand. The existing pins are tapered --.282 at the top of the = threads down to .270 @ the bottom. 2 =BD "long. and reasonably tight. = Based on past experience I would use one size larger pin (usually 3/0 ) = and expect good tunability.=20 I usually use Denro blued (.286) but I don't remember ever = repining a block that had tapered pins. Should I chase the hole with a pin block drill bit and if so what = might the relationship between drill bit size and tuning pin diameter? = I'm a bit hesitant to do this as I was advised against reaming holes in = old blocks by a manufactures tech rep and past journal editor =20 I see Diamond brand offered by Pianotek has a 3 =BD .288 diameter = pin.I 'm considering using Diamond 3/0 's and having the 3 =BD 's to use = if necessary I'm all for experimenting here and will report my results, but any = advice on this will be appreciated. Tom Driscoll =20 P.S. Please refrain from the "why don't you replace the block = "argument. The piano plays well, stays in tune within reason, and will = benefit from new bass strings in a home where the budget cannot consider = a rebuild. = =20 =20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/06/77/f2/8f/attachment.htm ---------------------- multipart/alternative attachment--
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