<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"> <title></title> </head> <body text="#000000" bgcolor="#ccccff"> Although I use CA from time to time, in cases like this, I prefer tapping pins in deeper.   <br> <br> Reasons:<br> 1)I feel CA glue doesn't penetrate well if  applied to an  piano standing up.  Laying a piano on its back is an involved procedure.<br> 2) I don't really like introducing any chemicals into a pin block.  The effects of chemicals on future re-pinning (which in such a case I consider almost inevitable at some point down the road) are unknown (at least by me).<br> 3) I prefer the aural assault of driving the pins (I wear ear protection) to the  chemical assault to my lungs.<br> 4) If pins are really that high, tapping them in will improve tunability by reducing flag poling.<br> <br> <br> A few comments: neither measure will address a cracked pin block, and driving in pins needs to be done judiciously, of course.  Always make a test on a few pins before going the whole nine yards...<br> <br> Jurgen Goering<br> ---------------------<br> <br> Chris  wrote:<br> <blockquote type="cite" cite="mid200410271639.i9RGdeY11016@bridget.rudoff.com"> <div><font face="Arial" size="2">I've got a customer with loose tuning pins (well, I mean her piano, of course).  It's an old upright piano of nominal value.  Normally I would not drive the tuning pins to correct this, I would do the CA glue thing (unless there are indications of a more serious problem).  But in this case I am considering driving 'em, because:</font></div> <div> </div> <div><font face="Arial" size="2">1) The tuning pins are really high (about 1 inch), and there is lots of room between the coils and the plate.</font></div> <div> </div> <div><font face="Arial" size="2">2) All the pins in the piano seem to have about the same torque.  So that makes me think that I'm not seeing a cracked pinblock problem.  </font><font face="Arial" size="2">  </font> </div> <div> </div> <br> </blockquote> </body> </html>