Gordon, It is good to hear you tighten bolts and screws on a regular basis. I wish I had made it more of a habit in my earlier years. The current trend I see in many grands is installation of smaller lag bolts than I feel comfortable with tightening down forcefully The S&S lag bolt is 4 1/2 inches long by 7/16 diameter with a 5/8 head. I know it is not going to snap when tightening using a 1/2 inch drive socket arrangement with a 12 inch extension. The plates installed on dowels are always candidates for tightening. What appears to be a bass bridge buzzing can many times be a loose dowel which is a real bonus when fixed by just cranking down on the bolts. When rebuilding Steinway pianos it is adviseable to replace the lag bolts with current ones. The socket always fits. I ran into the same problem Barbara had once and it was a nightmare. The broken piece eventually come out, the hole doweled and re-drilled. If adversity builds character then that experience had to make me a patient technician. Brent Fischer Arizona State Brent.Fischer@ASU.EDU Arizona State University/Tempe
This PTG archive page provided courtesy of Moy Piano Service, LLC