Amen Bob...my sentiments exactly...or is that sediments...I guess I'm getting a little to sedentary lately...any, I fully agree...its a lot of work for "fun".
I did look all over my drums for any semblance of a stamping for the max. dia. but never found one.
It would be nice to figure it out...is there a way to 'establish' a safe minimum based on what can be discerned from drums from other manufactures of basically the same materials and load handling? Like if there is a 12 inch that can get down to xx.xxx which leaves a thickness of 0.yyy of material for the shoes to wear on, can we say, ratioing against that number, that our drums should be safe if the max. dia. does not exceed zz.zzz??
Bob, you da man with the closest chance of working this one out I know of...theres a cold one in it for ya at the FE if ya do!!
brute4c