9" Rear Drums

I agree. I don't know why brake lathes are such a pariah nowadays. In a previous life I have LITERALLY turned thousands of drums and rotors. About 15 years in two different parts stores. Everything from the smallest drum you can imagine (what Fiat? Cushman?) to heavy truck / trailer brakes, and I've relined my share of shoes, too, on a "stomp" rivet machine.
We turned a ton of drums my first go around at the parts store. I was lucky to have a pair turned close to a decade ago before the last shop in the area with a lathe, closed.