I personally believe that birch is a fine tone wood, despite the fact that it doesn't generally have that reputation. People who know woods better than I do compare birch to maple. If that is accurate, I would say that mahogany is a closer match to rosewood than birch, although probably not all that close.
I would recommend that you follow the bracing pattern that H165 pictured earlier in this thread. The only thing that I would change is the width of the bridge plate--it appears that it might be a little wide. 1-1/2" wide X .100" thick is plenty for this application, IMHO. All the H-162's and 621's that I have seen have relatively thick tops--.140"-.150", so there is a lot of strength there. Use some sort of spruce for the braces, and maple or similar for the bridge plate. You can be fairly aggressive in the scalloping--dig up some images of prewar Martins for an idea of what to shoot for. I'm sure that you will end up with a fine sounding guitar.
Good luck, Bill
Last edited by bisco1; 07-29-2021 at 09:38 AM.
Reason: grammer
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