Regarding area-specific thinning of the soundboard edges. Do you do this after gluing on ribs or before? If done before gluing on ribs, does this cause concern regarding the radius of your rib-to-soundboard gluing caul - that is getting the proper radius - it would tend to flatten the bottom of the board (and the rib) out when gluing up in the caul - unless of course your caul has some kind of a compound curve cut into it to compensate for the thinned soundboard. If thinned after gluing up ribs, no problem gluing on the ribs, but then you have this funky dome/tunnel thing squirming around while you try and run a big plane across it. What's a guy to do? Terry Farrell
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