Gene, You made me think. We recently purchased an impact drill to drill holes in our cement basement walls. It has a force limiter dial so one could limit the tork on the screw yet push the screw to set the screw deeper. Only a little bit might be all you need. Don't twist a head off! Joe Goss BSMusEd MMusEd RPT imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: Gene Nelson To: pianotech at ptg.org Sent: Friday, July 29, 2011 5:56 PM Subject: [pianotech] tightening the pressure bar I am curious to hear your thoughts about tightening up the hold down screws on an upright pressure bar - pulling the bar down to put more pressure on the strings. That is; when do you decide to tighten and why - that is before you experiment - before you tighten and just see what happens? Working on a 40's vintage Wurlitzer 42" console I found it sharp from the lo-tenor to the top and after 3 passes it still wanted to pull sharp (likely a separate issue). It has semi loose tuning pins - the type where you could feel every tick with the slightest movement of the tuning hammer and every tick produced a noticeable pitch change - it was not easy to set the pins. Thinking that tightening the pressure bar could add some drag/friction and help with this situation? Thanks, Gene -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20110729/950f0c05/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 2488 bytes Desc: not available URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20110729/950f0c05/attachment.gif>
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