Ashborn style banjo build

[Jon Whitney]

I've built a rim with a wood flange for tension hooks along the lines of James Ashborn designs.  It's loosely based on Frank Ford's photos of the 1852 Ashborn banjo on Frets.com here. While this instrument has fret position marks on the neck, I understand that Ashborn also sometimes added actual frets to his banjos.  I'm interested in doing this also.  

Thoughts?