I finish my hammer shaping with 400. It give the attack a little brightness on soft playing. I find it evens out the quality of attack from soft to loud playing. Marcel Carey, RPT Sherbrooke, QC > -----Original Message----- > From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On > Behalf Of Dave Nereson > Sent: November 12, 2004 2:27 AM > To: Pianotech > Subject: fine grit hammer filing > > > > ----- Original Message ----- > From: "Don Mannino" <donmannino@comcast.net> > To: "Pianotech" <pianotech@ptg.org> > Sent: Tuesday, November 09, 2004 11:39 PM > Subject: Re: voicing/juicing ronsen hammers > > > > . . . . . They still needed a little more, so I filed > them with 1,000 grit > > sandpaper . . . . . < > > Isn't 1000 grit about as abrasive as, say, newsprint? > I'll admit that > most of the hammers I've filed are on old pianos whose > hammers have never > been filed since they were built, and the string cuts are > an eighth of an > inch deep or more. Sometimes I'll re-file a job someone > else botched. I > seldom have a chance to do voicing on really nice grands. > But even there, > I've never used finer than 120 grit. Using finer seems > like going past the > point of diminishing returns. Does going up past 320 or so > really make that > much difference? > I would think that under a microscope, the surface of > piano hammers > would look something like an overgrown back yard or maybe > an Afro hairdo. > Sanding something this fuzzy and fibrous with 1000 grit > seems to me like > "brushing" your cat with paper to smooth out its fur. > What's the finest grit you ever use, and why? > --David Nereson, RPT > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
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