Replacing the metal lip

I'd looked all over for an appropriate piece of metal to use to make the overlapping lip that seals the top and bottom together. I didn't find anything I liked, but I did have some very nice rock maple that I usually employ when making banjo bridges. I cut and soaked some thin strips and glued them into place around the outside of the top. Binder clips are very, very good clamps for this and other instrument repair projects. Get a lot of them in many sizes if you undertake a job like this.