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local place to get good metal hole saws

The milwaukie ice ones lasted longer for me than the lennox ones doing repetitive holes in 3/16" plate. IIRC, I got them at lowes.
 
I think the speed/feed and cutting oil has a lot to do with it too, just like a drill bit. That said, I like the Lennox ones myself.

~T.J.
 
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