On Apr 26, 11:33*pm, wrote:
Got any tricks for a guy to evenly "Tri-cut" the butts of 1/2"
drill bits that basically has no machinery?

Draw filing, grinding whatever, don't care I mostly need a way
to index 'em.

What ideas you got popping out? xD

Alvin in AZ

As a cheap index, you could drill through a hex nut and then slide the
nut onto the shank of the drill and epoxy it there. Once dried, use
it as an index and grind the flats using something like a table saw
with an abrasive wheel mounted in it. Pop off the nut when you're
done. You can weigh the drawbacks and dangers for yourself.