I imagine this is an impossible task on a BBS, but how do you suggest I learn to sharpen drill bits?
I have a KO grinder and do not know how to use it to sharpen drill bits. I have used it to sharpen HSS lathe bits by hand (with 50/50 success per the SB "How to run a lathe" book) but I do not know the critical parameters for sharpening drill bits or milling cutters.
A reference as to what angles/reliefs are critical may help me or others. I really want to be able to maximize the life of my tools, even if it isn't cost effective. My hobby time doing anything in the shop can be counted as zero dollars! It helps make me sane!
So, how do you re-grind a drill bit? Also, is it worth re-grinding the generic Chinese bits or should you only start with quality stock?
Happy New Year!