do it all the time, or at least did until i made my drill sharpening jig. Hand sharpening of twist drills seems to be one of points of delineation between those who really know what they are doing and and those that don't. It shouldn't be that way though, its just not that tough to do. It does take some skill vs just plain old knowledge, but that will come quickly with some practice and everyone should learn how, its a basic shop skill. with a drill point gauge, nicely dressed wheel and a spare 3/8 bit, long before you grind your way through that bit you'll have the hang of it!