John Delmore said: "Hello List: I have obstinate button bushings. The balance rail pins are 0.143 (I know, I know?but I?ve checked, rechecked and checked again?throughout the keyboard, mic set at 0.146 slips right on, tightens to 0.143), and the mortises are 7/32. Front rail pins are 0.146, mortises ?, even. The 0.146 mortise sizing cauls (Spurlock) won?t fit in the button mortises. With Renner ?Thin? bushing cloth, a 0.125 final caul gives about a perfect dry fit. The 0.146 final caul ?will? fit, but very, very tightly (no split buttons?yet, scary tight, though). So, is there a source for ?super-thin? bushing cloth? Replace buttons? Use the 0.125 cauls and ?ease on down the road?? Stuff in the 0.146?s and hope for the best? Thanks for any advice." John, Why not make some cauls for .144" which should size them just fine for the .143" pins. Fairly easy to make.<G> I'd insert with the ones you have and then, immediately put the proper sized cauls in while the glue sets. Since I work on all of that weird stuff, I've got a bazillion different sized cauls that I've accumulated over the years. You'd be suprised how often I use them..<G> Not all of the piano world was/is standard size. Right now, I'm working on a Grotrian, circa 1980's, The Front pins are .130" and the centers are .136"!! Dang Germans don't have any regards for "after market" Service evidently! GRRRR! Dumkopfs! (sp?) <G> BTW, let's get this nominclature thingee straightened away: They are Key Buttons and Center Rail Bushings. (it helps if we all speak the same language.<G>) Regards, Joseph Garrett, R.P.T. Captain, Tool Police Squares R I -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20060826/c3c56e16/attachment.html
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