Joerg, are you going to do the machining yourself? Any good brake shop will have a list of thickness tolerances to go by. They will mic the drum to see if it is within tolerance or not. They usually remove just enough material to get rid of the lip and be smooth all the way around. They won't do an unsafe drum.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
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