Sharp'inun twist drills

A 1 inch vertical band sander works for me. The grinding is is where I can see, and use the table to brace hands some. A band sander seems to take heat away better than a stone grinder. It is about getting the sides equal and the advance correct for the material drilled. I started sharpening drill and lathe bits for my dad when I was 13. I have to work much harder at it today, same with soldering electronics. I think it is related much, to eye sight.