<HTML style="FONT-SIZE: x-small; FONT-FAMILY: MS Sans Serif"><HEAD> <META http-equiv=Content-Type content="text/html; charset=windows-1251"> <META content="MSHTML 6.00.2900.2963" name=GENERATOR></HEAD> <BODY> <P> <DIV>John Delmore said: "<FONT size=+0>Hello List:</FONT> <DIV><FONT size=+0></FONT></DIV> <DIV><FONT size=+0>I have obstinate button bushings. The balance rail pins are 0.143 (I know,</FONT></DIV> <DIV><FONT size=+0>I know?but I?ve checked, rechecked and checked again?throughout the</FONT></DIV> <DIV><FONT size=+0>keyboard, mic set at 0.146 slips right on, tightens to 0.143), and the</FONT></DIV> <DIV><FONT size=+0>mortises are 7/32. Front rail pins are 0.146, mortises ?, even. The 0.146</FONT></DIV> <DIV><FONT size=+0>mortise sizing cauls (Spurlock) won?t fit in the button mortises. With</FONT></DIV> <DIV><FONT size=+0>Renner ?Thin? bushing cloth, a 0.125 final caul gives about a perfect dry</FONT></DIV> <DIV><FONT size=+0>fit. The 0.146 final caul ?will? fit, but very, very tightly (no split</FONT></DIV> <DIV><FONT size=+0>buttons?yet, scary tight, though). So, is there a source for ?super-thin?</FONT></DIV> <DIV><FONT size=+0>bushing cloth? Replace buttons? Use the 0.125 cauls and ?ease on down the</FONT></DIV> <DIV><FONT size=+0>road?? Stuff in the 0.146?s and hope for the best?</FONT></DIV> <DIV><FONT size=+0></FONT></DIV> <DIV><FONT size=+0>Thanks for any advice."</FONT></DIV> <DIV><FONT size=3></FONT> </DIV> <DIV><FONT size=+0></FONT></DIV> <DIV><FONT size=+0>John,</FONT></DIV> <DIV><FONT size=3>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>)</FONT></DIV></DIV> <DIV>Regards,</DIV> <DIV> </DIV> <DIV>Joseph Garrett, R.P.T.</DIV> <DIV>Captain, Tool Police</DIV> <DIV>Squares R I</DIV> <DIV> </DIV> <P></P></BODY></HTML>