Thanks Stefan, I had a customer I let strip his own piano. He thought he knew more than I did, and ruined the case by trying to "sand out" stain spots in the veneer. Most "scratches" can be steamed out, with a bit of wet fabric pressed under an iron. The alcohol/lacquer thinner/abrasive pad idea seems best to remove residual stain, if possible. Or a brass brush dipped in the stuff, followed by a paper towel/solvent wipe. ( Wear gloves and a mask. ) My suggestion for chlorine bleach was only for AFTER all these other methods have been tried. Aniline stain responds nicely to it. This I learned fropm Bob Flexner, one of the world's top finish experts. G --- Stéphane Collin <collin.s@skynet.be> wrote: > Gordon, > > I know this is a well known nono, but in my life, > sanding by hand with 240 > grit in the direction of wood grain evens the tone > of wood without ruining > the veneer. No other technique got me rid of the > superficial scratches and > of the offendable changes in colour shades of > veneer. Yet, I'm readdy to > experiment better techniques. Maybe we disagree on > some english term, like > sanding. I know in flemmish, there are two words > for sanding : "schuuren" > which is sanding with 40 grit to 180 grit, and > "slissen" which is sanding > with 240 to 1200 grit, and sounds more like > polishing. In french, no > difference : both are called sanding. How is it in > English ? I recall > having made concavities in my early days with a > sanding power tool and 120 > grit, insisting on areas which presented > defectuosities, but this I do not > anymore. Anyway, always nice to share experience > (if I can say I have > some). > > Best regards. > > Stéphane Collin. > > > Sorry, Stefan. He'll never sand to "bare wood" > without > > going through the veneer, and generally making a > mess > > out of it. DO NOT NEVER EVER ATTEMPT TO EVEN THE > TONE > > OF VENEERED WOOD BY SANDING !!!!!!!!! > > You will sand through, end up with concavities, > etc.. > > > > > _______________________________________________ > pianotech list info: > https://www.moypiano.com/resources/#archives > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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