Thanks to Dan Drabek's advice I made myself a quick router table and set up a simple jig as he suggested.
This allowed me to quickly remove all of the waste from the inside of my rim using my router rather than all by hand with a rasp and sandpaper. This worked really well and, with a series of light passes, I was able to strip things away to get me to here:
Now, this approach worked great but it did rely on the outside of my rim being perfect .... which it wasn't. But this is all a bit of a warm up for banjo number 2 so I'm taking these techniques, learning from my mistakes and getting ready for the next build.
Next up on this banjo is getting a decent fit for the neck, drilling for the coordinator rod and tension hardware and then onto the fretting and inlay.
Major lessons learned this time round:
1. Keep the neck square for as long as possible
2. Don't trust my eye and hand for shaping the rim - set something up that can be relied on to do it rightAdd Comment
'banjo looses above G' 3 hrs