<html> <body> Nora, You will encounter some differences of opinion on this.  Beware that ultra thin CA glue will travel and leak out too.  On grands I tape up foil to the bottom of the pin-block to prevent belated spills (potential problem in drier climates).  On uprights protect the floor. I've never used more than a fraction of a bottle.  Others use more.  I am inclined to give it what it will soak up, making several passes.  You will notice on grands that filling on tuning pin will eventually wick to neighboring pins.  While trickling the CA in on upright standing upright pianos will work, I've been unsatisfied with the result in one case.  I plan on tilting upright pianos now. Andrew   At 12:39 PM 3/8/2006, you wrote: <blockquote type=cite class=cite cite="">So how does one know when one has applied enough CA glue to the pinblock?  And what about the tuning pin bushings--don't they soak up a lot of the glue, too?    Thanks!   Nora Somer Associate Member   _______________________________________________ Pianotech list info: <a href="https://www.moypiano.com/resources/#archives" eudora="autourl"> https://www.moypiano.com/resources/#archives</a></blockquote></body> </html>