"RichK" wrote in message

Have not even thought it was possible to do it by hand. I have a bench
grinder that does not get much use, maybe I'll destroy one for practice.
Will also look for a tutorial, although someone has already posted a few
hints in this Group.

Possible, but difficult to get the angle exact on both flutes. Most people
ruin them. Some simple guides are available at low cost.

I sharpen mine now that we have a Drill Doctor at work. I cannot justify
buying one myself. They cost about $100 and for that money, I can buy a LOT
of bits.