Thank you, David. - John Parham > -------- Original Message -------- > Subject: Re: [pianotech] re. Small vise grips for mass loading > From: David Andersen <david at davidandersenpianos.com> > Date: Fri, November 26, 2010 10:52 am > To: pianotech at ptg.org > > > I use two techniques to assess soundboard life, along with more "normal" tests such as measuring crown with a gauge or bearing sticks, or measuring crown with a straight edge between the strings or a string along the longest rib on the underside: plucking strings in every section and listening to the sustain, power , and resonance, and thumping the board from underneath with the "meat" end of my closed fist and doing the same thing. Your ears are truly your best tool.... > DA > > > On Nov 26, 2010, at 6:54 AM, <johnparham at piano88.com> wrote: > > > Jim and List, > > > > Thanks for verbalizing this technique. I was exposed to it several > > years ago and use it fairly frequently. I have no idea how widespread > > this idea is. Without overstating the obvious, I wonder if it is worth > > posting in TT&T (I'm always looking!) > > > > More interestingly, I wonder if there are other simple, handy techniques > > that other technicians use when collecting diagnostic information about > > the soundboard variable? > > > > Ideas? > > > > Happy Thanksgiving to all, > > John Parham, RPT > > Hickory, NC > > > > > >> -------- Original Message -------- > >> Subject: Re: [pianotech] re. Small vise grips for mass loading > >> From: jimialeggio <jimialeggio at gmail.com> > >> Date: Tue, November 23, 2010 1:53 pm > >> To: joegarrett at earthlink.net, pianotech at ptg.org > >> > >> > >>> > >>> I can see these CHEAP knock-offs being used for the mass loading > >>> thingee or perhaps holding the clutch linkage of your 1958 > >>> International Truck, but to use those pieces of junk for anything else > >>> would be a real travesty. > >>> > >> True...complete agreement...however,it just aint worth a serious tool > >> investment to have a number of duplicate expensive single purpose grips > >> sitting unused in the toolbox most of their lives. Sometime junk has it > >> uses. These are junk, but in this case I think junk is just fine...one > >> just needs to keep their expectations appropriately low. > >> > >> Jim I > >> > >> > >> > >> -- > >> Jim Ialeggio > >> grandpianosolutions.com > >> 978- 425-9026 > >> Shirley, MA > >
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