hgreeley@leland.Stanford.EDU writes: > (FWIW, both of > them preferred at the time, when any hardener was needed at all, > shellac. I used it for a long time...basically until customer/technician > complaints about "discoloration" became too onerous. Greetings, Horace, Three things. First, I assume they used alcohol as a solvent, but did they ever also use anything hotter, like acetone, as a diluent? Second, I don't see why bleached shellac wouldn't do in this application. Third, it seems to me that shellac belongs in the category with some sanding sealers and really cheap lacquers in that it has low cohesive strength, and is easier to break up when voicing. The "better" lacquers are more toward the keytop/acetone end of the very high cohesive strength continuum. I think there's a difference in tone, and I suppose one could argue that it comes both from the way the two types bind the felt together as well as the way they react to needles. Bob Davis
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