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Double margin drill bits

J

jimgreen

Well Known Member
Just found a reference to these on Pan American Tool website.
They look like they might be useful to us in certain cases. Perhaps when drilling larger diameter holes in thin sheet stock.
It sounds like they drill a more accurate hole.
Anyone got experience with these?
 
Pan American Drills

Just received another order of cobalt stoveburner drills from them. They work best for drilling aluminum. Built two airplanes with a dozen 30`s and 40`s.
 
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