???????????????? For what it's worth I like the look of shiny Nickel pins better and?they matche more things shiny on the pianos these days ... If diamond would cut the thread after plating, I'd use them. Originality has nothing whatsoeverto do with my thought process.....but that's jsut me. ????????????????? Dale ? Hi Kendall ? Our pin of choice are Blued, Diamond brand pins. On occasions we use the Japanese pins.? The difference for us is that the Diamond Blued pins clearly have a cut thread that is not blued over & they are far more consistent in true size.? The Nippon Denro typically run on average .002 smaller than the stated size, which can be a good thing when repinning an original block that doens't need a true sized pin.? They also make a 3 1/2 size pin.? Nifty aye? ? The diamond nickel /chrome plated pins appear to have had the threads cut & then plated?over which I dislike & don't trust this though I ahve used them at one time. ? For my Shop made 1/4 cut maple blocks I've had the best uniform fit from the Diamond made pins. ? For years Trix miked all the pins in a set & put the largest in the bass & smallest in the trebles. Finding something truly round is about as consistent as finding something truly straight.? Just try running a micrometer on a few sets and on differing points on the pin & you'll see. It's a good thing wood is pliable & forgiving. ?? My friends once had a set of the Diamond that was oblong/out of round?but to my knowledge this was the only one we've ever heard of. This anomaly occurred during the time when we mic'd every pin... every set.? ughh.? SO diamonds are? more expensive but not when you consider we don't mic pins very often anymore?& they are as reliable as any we've tried ?? ?regards Dale Erwin ? Hi Kendall ? Our pin of choice are Blued, Diamond brand pins. On occasions we use the Japanese pins.? The difference for us is that the Diamond Blued pins clearly have a cut thread that is not blued over & they are far more consistent in true size.? The Nippon Denro typically run on average .002 smaller than the stated size, which can be a good thing when repinning an original block that doens't need a true sized pin.? They also make a 3 1/2 size pin.? Nifty aye? ? The diamond nickel /chrome plated pins appear to have had the threads cut & then plated?over which I dislike & don't trust this though I ahve used them at one time. ? For my Shop made 1/4 cut maple blocks I've had the best uniform fit from the Diamond made pins. ? For years Trix miked all the pins in a set & put the largest in the bass & smallest in the trebles. Finding something truly round is about as consistent as finding something truly straight.? Just try running a micrometer on a few sets and on differing points on the pin & you'll see. It's a good thing wood is pliable & forgiving. ?? My friends once had a set of the Diamond that was oblong/out of round?but to my knowledge this was the only one we've ever heard of. This anomaly occurred during the time when we mic'd every pin... every set.? ughh.? SO diamonds are? more expensive but not when you consider we don't mic pins very often anymore?& they are as reliable as any we've tried ?? ?regards Dale Erwin Hi, I haven't posted to the listserve before so let's see if this works. ? I had some questions about the different types of tuning pins and wondered if someone here could answer them. (I'm trying to write an article about tuning pins). ? It might be nice to?have?some discussion on something that many technicians seem to take for granted: why tuning pins come in the types and form that they currently do. ? (This may have all been covered before somewhere in the Archives, but if it was, I couldn't find it. So if it's there, I apologize in advance; could someone just point me to where it is? Thanks.) ? I've attached a photo for reference. ? The photo refers to the three basic types of tuning pins we routinely see. (These were all photographed together at the same time on the same white background. The photo is "unretouched." -The colors in the photo?seem to be fatihful to the genuine articles.) ? On the far left is a blued steel pin, in the middle a nickel plated pin, and on the far right a nickel plated/blued thread pin. (The end pins are Nippon Denro, the middle pin I think from an Asian piano, maybe Kawai,?as it seems to be metric.) ? The pin in the middle has generally fallen into disrepute (I think I know why, because the threads are plated, right?) -but perhaps we need to re-examine this. Maybe this type of pin is still valid for certain extreme humidity applications? ? The following questions pertain mainly to the "blued" vs "nickel-blued pins". ? The questions I have are: ? 1) Why are the threads on the "blued steel" pin?a different color than on the "nickel-blued" pin? (also - Why aren't the the threads on the "blued" pin the same color as the?unthreaded portion?of the pin?) ? 2) If the threads on the "nickel-blued" pin are cut after nickel plating, (which should remove the plating on the threads right?) and then are heated in the bluing oven, why aren't they the same color blue?as the unthreaded part of the "blued" pin?? ? 3) I am?speculating that perhaps the threads on the blued pin are cut after bluing (which removes the bluing, to a certain extent, just like it removes the layer of nickel plating on the nickel blued pin) while the threads on the?nickel blued pin are blued after cutting.?Does the order in which the operations are done affect the quality of the thread? Does having to cut through nickel plating produce an inferior thread? ? 4)?Would anyone here care to restate?why the blued pins (as opposed to nickel-blued) are preferred over the nickel-blued by many piano technicians? ? 5) What is the real purpose of the threads on the tuning pin, (besides to help back the pin out in restringing.?One source I have read says the threads make it easier to turn the pin in the pinblock (as opposed to an unthreaded pin). Any thoughts on this? ? 6) Today apparently all tuning pins have "cut" threads, as opposed to "rolled" threads. Why is this? What does "rolled" threads mean? Why would they be inferior to cut threads?" ? 7) Catherine Beilefeldt, in her book "The Wonders of the Piano", in describing the process at AMSCO (when it was still around), says that there both the nickel-blued and blued pins were blued after threading. Does anyone know if Nippon Denro does it differently? How about Fly Brand? Diamond? ? 8) What, exactly, are the?infamous "reverse?cut" threads that were touted so highly by certain sales reps and?dealers of Japanese pianos? ? 9) What about Larry Fine's and Art Reblitz's contention that if this were really the case (if the "reverse cut" or "reverse thread" pin turned more easily in one direction than the other) it would wear the pin block out faster? ? 10) Why, really, did manufacturers (except Bosendorfer) stop using tapered pins?? ? I have a number of books that touch on the manufacture of piano tuning pins, but none that really seems to have more than a superficial understanding of why tuning pins?are made the?way?they are today. ? If anyone knows of a reference work or resource that would have the?history of the development of tuning pins, or an article in the?PTJ (or even a thread in the CAUT or Pianotech archives) that addresses these issues, I would be very grateful if they would let me know where?I can find it. You can either post your answers on the listserve, ideally, where all could benefit, or e-mail me personally at address below, if you prefer. ? Sincerely, ? Kendall Ross Bean PianoFinders? ? (e-mail: kenbean at pianofinders.com) ? ? ? ? [Image Removed] The Famous, the infamous, the lame - in your browser. Get the TMZ Toolbar Now! -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080709/c0e4a126/attachment.html
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