Hello everyone. I am building a welded aluminum bass in the upcoming month or two or five and would like your opinions on so many things. I have never built anything like an AAUB but have an extensive metalworking background. I have done lots of repairs on my old and long gone Jim Laabs Vienna, as one would expect, using hide glue on split seams then resetting the sound post etc. I purchased life sized blueprints of a 3/4 Matteo Goffriller bass. I plan on using these dimensions but with lots of structural designs of the 1929-1930 Alcoa of which I have only seen pictures of as well as that repair video on YouTube. You know the one. I'm really excited to see what questions can be answered from you guys. I don't mind a little trial and error either which is equally exciting. I will throw in some fun/dream stuff too. Here we go. - What thickness or gauge was the material used? I am guessing it's over 1/16th but under 3/32 so that would be about and 14 or 15 gauge. I could be way off though. - Is the bass bar the same thickness material as the top and back on the Alcoa? - Would welding the sound post to the top and back as opposed to setting it benefit or inhibit vibration? Welded aluminum or set carbon fiber? - Do you think completely polishing the inside and getting rid of surface imperfections could allow for greater vibration or would it be a waste of time? - Rip off Alcoa and not completely cut out the F holes or keep it traditional? - I should probably splurge on the Sloane machine tuners right? Right? Hopefully they are available when the time comes. This will take a while to complete. I expect most of the time will be spent on the neck and scroll since I will have to fabricate it all by hand with no access to milling equipment. I will post pics as this monstrosity unfolds. Thanks for any responses, answered questions, or ideas. Cheers!