Hello. I recently acquired a couple of vintage Tama Superstar concert toms in Super Mahogany finish. I'm interested in converting them to closed toms by having bearing edges cut on the bottoms of the shells and mounting the lug casings for the bottom heads. A friend of mine is pretty good at cutting bearing edges with his router. I'm fairly handy with a drill, but I don't want to damage the shells in any way. Does anyone have any words of advice regarding this procedure?
I also posted this question on the Tama site, but I know there's a wealth of information among the members here, as well.