Well, Ron has lots of free time... '-] David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Joseph Garrett" <joegarrett at earthlink.net> To: pianotech at ptg.org Received: 6/8/2009 8:01:36 AM Subject: [pianotech] Re. Glue for hammers >Paul McCloud said: "Having flexibility in the glue joint is going to affect the system, >either a little or a lot. Which one I would guess would depend upon the >degree of flexibility. If it doesn't matter that there's flexibility in >the glue joint, then why do loose hammers emit a different tone? Ok, >that's an extreme case, but is it not a matter of degree? In that case, >the hammers are still disconnected from the jack and continue forward from >momentum. Let's hang some hammers with different glues, different amounts >of clearance in the joint, shanks that are/are not knurled, and see what is >the result. I would guess that there will be some slight difference. For >the sake of this thread, a direct comparison would be very informative. >My take." >Paul et al, >Yes it is "very informative" AND enlightening. I've done the experiment, as you >suggest, but not with the Titebond M&H glue, (it wasn't around then). I used PVC-E; >TiteBond & Hide Glue. I first voiced the hammers so that they were very even. >Then, I removed 2 hammers and reglued with the "Other glue". Let set up for 48 >hours and then listened to the difference. This was done on a piano with new >hammers/Shanks and flanges, in my shop. The difference was VERY discernable and >definate. It proved what I suspected. End of story. If any of you wish to do the >same experiment, please do. To debunk is somewhat disrespectful, IMO. <G> >Thanks for listening >I'm out of here for another hiatis >JOe >Joe Garrett, R.P.T. (Oregon) >Captain, Tool Police >Squares R I
This PTG archive page provided courtesy of Moy Piano Service, LLC