On Dec 19, 9:29*pm, Dan@ (Pirateer guy) wrote:
Woodworker has the only answer. Grind the cutting edge to 90 degrees
and the drill scrapes out the material. Super easy.
I've even done it on large drills for drilling cast iron when the
drill tries to screw itself through the material.
You get the gold star.

That's what he means by the zero rake. What he means by the 90 tip
angle is the included angle of the tip, instead of the 118 or 135 of a
regular jobber bit...