great lesson, Brian! Thought I recognized your voice. I've downloaded your build video series and made a dvd of them. Naturally, also, I recognized your butterfly design. Coincidentally, I made a cbg recently with a butterfly sound hole.
Hey I loved this!!!!! I think we all appreciate going back to the basics. That's one of the reasons we build and play these instruments: because playing music and having it enrich your life is available to everyone and not just a select few who can perform contortions with their fingers!