John
If you have a bench grinder, Grigg and I can show you how to hand sharpen a drill bit, 1/4 inch and bigger.
Less than 1/4 inch, my eyes and a steady hand are not as good anymore
1/8, is the smallest I would sharpen years ago.
Biggest is about 3" by hand. In the old shops That's how drills were sharpened fast.
I'll scratch the drill set and battery drill motor off the list.
Don