Idk brother: wait around for the "perfect box" you might be waiting awhile. I do, however, think you might want to try the paper-covered boxes for your six--string. I'm no engineer, but it seems like the lids to the paper-covered boxes are often stronger than the "deluxe" boxes. When you tune your guitar to standard tuning, with six strings, you're looking at about 188 pounds (so I've read) of tensile pressure, and a good deal of that presses against the saddle and bridge, and onto the lid. Just a suggestion.
hey steve thank you for the comment it very appereciated. some time I would like to pic your brain about a non thru neck design complete with picup, however Im unsure how to attach the neck securely you have some nice stuff here on your site.
Hey Steve! - Thanks for all the nice comments on the recent build. I think you'll really like working with that box. It does have a nice thick wall for support, but the top & bottom are thin enough for good resonance. Good luck. Can't wait to see the photos when it's done. Take care! - Tom