In The Use Of Grindstones
: HOW TO GRIND AND SHARPEN TOOLS
There are certain things to avoid and to observe in the use of stones. Never use one spot on the stone, however narrow the tool may be. Always move the tool from side to side. Never grind a set of narrow tools successively. If you have chisels to grind intersperse their grinding with plane bits, hatchet or other broad cutting tools, so as to prevent the stone from having grooves therein. Never use a tool on a stone unless you have water in the tray.
|Fig. 17. Correct.
|Fig. 18. Incorrect.