John, What are "the deals" in your sentence " He planes (with a shooting plane of course) the edges of the deals very slightly convex so that when they are glued up, the board takes on a crown along the length and the finished article is more dome-like than bridge-like." Are these the ribs spoken of in our American english :-)? If so it very much has been mentioned in the topic of rib crowning boards and I would dearly love to hear how your friend does it! Greg John Delacour wrote: > At 10:17 AM -0500 1/18/02, Stephen Birkett wrote: > > >- remember my orange crate stock soundboard? Playing devil's > >advocate, though, I would suggest that you can pretty much make a > >decent board out of _any_ wood by modifying design parameters to > >accomodate...but that is treading into the territory of the "big > >soundboard thread".... > > At least your orange box will make the numerical modeling a bit > easier, since some of the numbers will already be stencilled onto it! > > No one's yet mentioned the crown along the board. I've never seen > this actually done but one of my seniors in England has described to > me how he does it. He planes (with a shooting plane of course) the > edges of the deals very slightly convex so that when they are glued > up, the board takes on a crown along the length and the finished > article is more dome-like than bridge-like. He claims this is no new > idea and inspection of certain pianos tends to confirm this. I keep > meaning to fix a time with him when he can demonstrate exactly what > he does. It's probably not half as frightening as it sounds. > > As to the spruce question, it is of course a very American notion > that it is THE soundboard wood. The first time I even heard of it > was when I began to stock Kawais in the 1980's and I always thought > it looked a bit second-rate. I have a good stock of European spruce > - where from I don't know, but it's excellent. New time I shall get > it from the forests near Fazioli's place in Trentino where the trees > are all fed with magic minerals three times a day. > > JD -- Greg Newell mailto:gnewell@ameritech.net
This PTG archive page provided courtesy of Moy Piano Service, LLC