List Does anybody consider using an "impact driver" as suitable, or extreme for plate/pinblock screw tightening? Your comments please. Bruce Browning - The Piano Tuner Michael Spalding <spalding48@earthlink.net> said: > Michael, > > I consider flagpoling an annoyance during tuning, but not a likely cause of instability as long as I have done the requisite test blows with pin- wiggling. But go ahead and CA the bushing - I don't see how it could do any harm. > > Others have suggested checking and tightening pinblock screws. Much more likely culprit in my view - in fact, do all the plate screws all the way around the piano. Equal opportunity problem, affects new or old. > > How's the string rendering through the front duplex? Too much friction, or "stick and jump", can easily defeat stability. > > Any other impressions from tuning, of unusual behavior? > > Mike > > > > > ----- Original Message ----- > From: Michael Gamble > To: pianotech@ptg.org > Sent: 6/16/2005 10:49:46 AM > Subject: Kawai CA-40 tuning problem > > > Hello Listers > This Kawai grand is not that old. It simply will not stay in tune. My colleague at Glyndebourne had tuned it the previous day - and, like.... it was horrible! Not just the 8ves, but the unisons also. He invited me to "have a go" - which challenge I took up with gusto! Next day I had a "look" at the tuning and found that... although it wasn't as bad as when I started the previous day it had indeed drifted. Now I think the web bushings are soft and the wrest pins are flag-poling. So I have a notion to inject some CA in there to try and solidify those bushes. What does the Team think? > Regards from a Bartered Bride day in the Sussex Downs > Michael G.(UK) --
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