machining 10 inch drums

All you need to do if find a guy who can turn drums and is willing to spend some time, and not much time, at that. ANY brake drum lathe should be able to shave off some meat off the edge of a drum, or if you can find someone with a lathe large enough to "swing" a drum.........

But even the average home shop lathe "might" turn a 10" drum.

The problem is

A.....many shops have gotten rid of their drum lathes

B...many shops don't want to take the time and trouble to do something like this

Where are you located? I do have a drum lathe, but shipping would be a killer. Much better if you could do this locally.