This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Terry: At what RPM? thanks ----- Original Message -----=20 From: Farrell=20 To: Pianotech=20 Sent: Sunday, November 14, 2004 11:20 AM Subject: Re: fine grit hammer filing Keep in mind that the only time I do this is when trying to salvage an = old ready-for-the-grave trashy upright. Do I voice afterwards? No. Does = the piano sound good when I am done? No. Does it sound better than it = was? Yes. Can I do a crude regulation now? Yes. I only remove felt down = to the bottom of the grooves, but yes, this often leave the hammers will = very little felt - but again, trashy pianos only here.=20 After a few attempts, I have worked out a one-swoosh technique for = using the Dremel hammer file tool. I start at 8 o'clock and swoosh right = around the whole hammer to a good 4 o'clock (basically from staple to = staple). Once you get the hang of it you get a real nice smooth hammer = surface, good shape, and you go so fast that there is no burning or = anything even close to that. Terry Farrell ----- Original Message -----=20 From: Quentin Codevelle=20 To: pianotech=20 Sent: Sunday, November 14, 2004 9:41 AM Subject: fine grit hammer filing Hi Terry, I tried the router-shaper thing a few times on extremely grooved = hammers. I don't like this solution very much because I had the impression = the machine is heating the felt very much, resulting an awful tone,real = harsh with a lot of voicing work to do after the shaping machine = operation. Of course it is fast, but the other problem is you have to get the = habit of using it, because I saw some hammers shaped with this shaper by = someone who never did this kind of work before, and it was a total = disaster. The hammer set was totally ruined, with not enough felt left, and an = awful hammer shape. What is your experience with it?=20 Quentin ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/0c/7a/40/32/attachment.htm ---------------------- multipart/alternative attachment--
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