Welcome to the Community. I saw that you are interested in and play various intsrtuments including the octave mandolin. I am primarily an acoustic guitar player, but I play a little mandolin as well and have been wanting an octave mandolin ever since I played one at a little music store near Washington DC. It was an Eastman "F" style and the sound was incredible. I have built a few instruments and have an octave mandolin on my drawing board right now. It will look similar to a guitar but be an octave mando. A long time ago I built an 8 string guitar which resembles an octave mando but is tuned like a 12 string guitar without the tow lower strings and their octaves. I tried stringing it with octave mando strings but it didn't work...the scale is just too long. So I drew up plans for a true octave mandolin and jhope to start it next after I finish the lapsteel I have been trying to get time to work on for four years! Anyway, here is the address to my website and to the photo/description page for my 8 string guitar. If you get a chance to visit, please feel free to sign the Guestbook!