SteveB wrote:
I bought a bunch of drill bits at yard sales recently. Some only have
flutes about a third of the way up the shaft, then clear shaft. They're as
long as normal bits, so they haven't been resharpened until becoming that
short. Can someone explain these to me?

Steve


They could be spotting drills or just a special ordered drill. Spotting
drills are used to locate or spot a drilled hole. They are made with
short flutes so they will be still and not wander when they first touch
the metal.


John