On 2009-07-28, Karl Townsend wrote:
I need to drill a hole in a grade 8 bolt. three actually, two cross and one
axially. I remember this was a stone bitch from last time I tried. I got one
shot this time. Should I drill it slow and hard like stainless, or fast and
light pecks? Other suggestions?

Grade 8 bolts drill nicely. In fact I will do the same today.

i