Buy a decent set of high speed steel (HSS) twist drills. Don't worry
about getting a set with a low friction titanium nitride (TiN) coating;
you probably won't need it unless you're drilling a large number of
holes, and a TiN coating doesn't guarantee that the drills themselves
are of a good quality. In my experience Dormer, Presto and CK are good
makes. You can buy Dormer sets from http://www.toolbank.com . Follow the
links on their home page: Drill Bits and Holesaws -> Drill Bits for
Metal -> Twist Drills - Sets.
We just use Dormer jobber drills for 316 stainless, they key is to get
the speed right , to fast and you will blunt them no matter what they
are made from. A little cutting agent helps as well.
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