Drill Bits Ground For Brass

[videoman]

Drill bits for brass need zero rake, just like a lathe tool for brass is zero rake. Most easily done by grinding the cutting edges of the bit (lightly)to be perpendicular to the work--- that is, grind a flat that's at a right angle to the surface. It doesn't take much, just need to get the sharp, angular edge of the bit blunted to zero rake.

I bought a set of Enco bits on sale just for this, since I was going to modify them, they seem to answer every purpose....
I did this using my surface grinder, but a bench grinder would do. My bits cut clean and don't hog-in; also have used them on plastics.