I have MANY (hundreds) of holes to drill in brass of my choice. (making perf-plates for a pasta extruder).
I'd like some input on what will give me the best surface finish inside the holes.
The life of the drill bit is important, but not critical. I will swap a bit every hundred holes if the surface finish is perfect. Also, I could use carbide drills, and drill 10,000 holes with one, but if that won't give as good a surface as (say) HSS, then I'll go with the HSS bits.