Not Ranked
Bob,
I always transfer marks to back side of work and cut from the back side. Use the almost worn out disc ( like when 1 1/2 in diameter) for the small radius cuts. I am also talking about the 1/8 thick cut off wheels not the metal grinding ones. I cut on the back side because if I get hung up or it skids across the work MURPHYS LAW it will not harm the final tin work.
It is also hard to beat a die grinder with a GOOD burr. They run about 25 bucks each and can get from Eastwood as one of many places. Big wide flutes for alum even if they throw fish hooks at you. The good old Dremel with the fabric type cut off wheel for small stuff is killer.
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