The instructions for hand grinding drills were good. I am an old escaped metal shop teacher (now a jeweler) so I keep a few teaching aids. The pdf file can be printed and used in making a home made drill grinding gage. Just cut one out and past it on a piece of sheetmetal with spray adhesive. Cut it out with sheet metal shears. You can cut notches for the graduations with a jewelers saw or just scratch them in. You can then remove the paper or just leave it on till it wears out. The spacing on the graduations doesn't have to be perfect because you are only using them to make the two lips equal length. Don't forget, when grinding, never let the shank of the drill get higher than the point of the drill or you will lose your clearance.
Dave Anderson Erik jewelry Drillgage.pdf
