With the CA Gel glue the hammer can be removed very easily with hammer removal pliers without heat. I have demonstrated this many times in class. Mark -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Delwin D Fandrich Sent: Tuesday, October 04, 2011 3:46 PM To: joegarrett at earthlink.net; pianotech at ptg.org Subject: Re: [pianotech] Stiff WNG? I have only used WN&G action parts with relatively light hammers--roughly the equivalent of Ronsen 14 lb--and with these hammers the action feels light and crisp. Very controllable. I don't know what it would feel like with heavier hammers. Though I think you're the first person (technician or pianist) I heard describe the action as "stiff." Next time I encounter one I'll try it again with that in mind. I've not yet used CA to glue the hammers on but I do see your point. Still, like most every other difficult servicing and/or repair task we encounter with pianos, someone will probably figure out a good servicing technique. ddf Delwin D Fandrich Piano Design & Fabrication 6939 Foothill Court SW, Olympia, Washington 98512 USA Phone 360.515.0119 - Cell 360.388.6525 del at fandrichpiano.com - ddfandrich at gmail.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Joseph Garrett Sent: Tuesday, October 04, 2011 10:09 AM To: pianotech Subject: Re: [pianotech] Stiff WNG? Perhaps I used the wrong word. Stiff is not exactly what I meant. I have done a side by side of two M&H, one with wood parts and one with the WN&G parts. The first thing I noted, was a harder, (probably still not the right word<G>), feel. (my "feel" was similar to the "feel" that I got when comparing the hard front rail punchings to the soft ones.) The main thing I noticed was a marked difference in tone. Of course, this was one instance where, supposedly the two pianos were the same, except for the actions. I know that no two pianos, even of the same manufacture and model, are "the same". The tone on the wood action piano was "warmer" to my perception. As for future servicing? My first thought would be in the repacement of hammers. I can envision major screwups involved in that process. Why? The use of CA type glues would be my first suspected problem area. IF, the hammer to shank joint were to fail, in the field...what would be used to fix it, thinking what the average tech carries with him/her. Wood can be glued back together, if broken. I'm not seeing that possibility with the carbon fiber stuff. Probably, I'm not thinking it completely through, or just not understanding the technology thoroughly.<G> Let's face it, we see all kinds of damage to our beloved pianos that defies our comprehension. I'm trying to envision repairs of these actions, in that context. Your testimony of the abuse that the action models have taken is certainly something to think about. Under those circumstances, they'd have to be "bullet proof", to be sure!<G> Regards, Joe Joe Garrett, R.P.T. Captain of the Tool Police Squares R I
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