A 6" Spofford, cool!
I have a nice 14" and have been looking for a 16" Spofford forever.
The pewter rings are a little tricky to do on a brace.
Well not tricky to pour at all really, just that finishing them is harder because you can't turn them on a lathe afterward.
Handles like chisels and screwdrivers that you can remount in the lathe, are easier to clean up.
In case you ever need to make a whole new center brace handle, or just re-pour some Spofford rings (often missing)
the story of how-to-do-it is here.
http://www.snowcrest.net/kitty/sgrandstaff/Brace11.htm I had to figure all this out, nobody anywhere was offering any advise at the time.
In fact, its still the only way I know how to do it. If you have made some and found an easier way, please tell!!
Here was my project but go back to the link and read the whole story.
yours Scott