sam mccorkel wrote:
>
> Is there anybody out there that uses Centerline "AT" drill bits?
>
> We got a flyer claiming 14,000 hits without resharpening.
>
> Curious to see your feedback.
>

My understanding is you cannot resharpen these.  The point geometry does
allow a lot more hits than typical.  The rake angle and helix angle
create a more massive corner, and the point geometry looks like a more
efficient chip maker to me, better cutting forces, smaller deformation
zone, so less heat, less wear.  I would guess, that if you don't care
too much about nailheading, you could get many thousands of hits, but
14000?

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