This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment James, =20 It is a Dremel that is no longer made (early 1960). The speed is slow . = I called Dremel for replacement parts (model# serial# etc) and I was on = hold seemingly forever. They could not recognize it, had no parts,and = could not positively identify it other than something that an old timer = said was a Fish Scaler. At any rate, It was the one I learned the = technique on and it still works. The rest of the thread has enlightened = me, and I hope it helps you. HubertLiverman Tuner/tech Opelika AL. ----- Original Message -----=20 From: JAMES DALLY=20 To: Pianotech=20 Sent: Sunday, November 14, 2004 6:52 PM Subject: Re: fine grit hammer filing Hi: I am interested in the Flex Tool. Could you tell me what tool, = etc. Many thanks, Jim Dally ----- Original Message -----=20 From: hubert liverman=20 To: Pianotech=20 Sent: Sunday, November 14, 2004 3:23 PM Subject: Re: fine grit hammer filing Are you using a flex shaft tool,and at what rpm? The one I use is a = flex shaft some 40 years old and low speed.I do two passes, one from the = 'under' side of the hammer midway over the strike point,and one down. = This leaves a little 'bead' at the point that can be by 'light' paper = sanding or the 'juice' of choice give good results when the action is = replaced in the piano. I do not do this in the home, and include it in = other action work deemed necessary... as they all do!=20 Hubert Liverman Tuner/tech Opelika, AL 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/f6/18/e7/f2/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC