Many years ago I read a book about violin/family construction, in which the author theorized on an "improved" method of top construction (in basses, this would only apply to carved tops). The theory was that in the standard carved top, because it's arched as you go from north to south (in the direction the strings run), that the grain structure of the wood naturally runs out on the sides of the arch. In other words, the little tubes of which wood is made up, don't run clear from the neck joint all the way down to the tailpiece saddle; they can't because the wood is carved away to make the top arched in that direction (and of course it's arched in the cross-grain direction, too). So the proposal was to make a top where the center section, between the F holes, would be one continuous strip of wood, formed into the longitudinal arch of the top; and then laminated to a left side and a right side which would be carved as normal (because they're interrupted by the F holes and the center bouts, it wouldn't be meaningful to try to make them continuous in the way of the center strip). My question is, does anyone know if such a construction has actually been tried, and if so were there any conclusions?