[pianotech] Soundboard Lacquer Finish

erwinspiano at aol.com erwinspiano at aol.com
Fri Mar 20 20:18:07 PDT 2009


By the way. I consider that I put on plenty of sealer but most of it is sanded away with dry orbital sanding. My top coats are generous too so I can sand flat with out going thru. AMHIK. Hate that. Even so the thickness safely guarantees a moisture transfer inhibitor. Ok. It slows it down but it's not nearly as thick as the polyester treatment of boards which I have reservations about.
? Dale




Dale:

?

I am impressed with the amount of work you (and others) do on the finish of the soundboard. It shows your respect for your craft even if no-one else sees the actual "finished" product under the strings and plate (other than the next rebuilder after we're long dead and worm-eaten). 

?
Paul
?looks like amber shellac over a very white Engleman board from Bolduc. Nice color. ?It appears that Stwy used amber shellac on all their old pre 1950s?boards. Why brush on? I spray on one good wet coat as a sealer coat. Let dry over night & then?Scuff it, then spray on 2 good coats of sealer, sand it out & then 2 good wet coats of gloss lacquer.?Wet sand with 400,600, Then?water wet steel wool on an flat automotive rub out hand tool which hold sandpaper & steel wool beautifully. Nice straight lines. It has a handle.
? ?Hand polish with Maguire swirl remover & a t-shirt cloth folded with no seams or creases
? It's a pretty nice look. On the bottom I don't rub out. Let it shine
? Dale





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