Not the Same Old Grind
Wet or dry? Wheels or belts? A survey of machines that shape and sharpen tools.
Violin maker Brian T. Derber and his students review a representative sampling of types of grinders on the market. They tested each machine by grinding a broad sample of tools and found that there is no ideal grinder; each of the machines has idiosyncrasies that you need to take into account when choosing one. They found that dry double-arbor bench grinders are most common and handle the broadest variety of woodworking tools. They customized a belt-sander grinder and find it works as a low-cost alternative. Wet grinders work the best at grinding woodworking tools. The writer includes a side note on ways to dress the cutting surface of grinding stone.
From Fine Woodworking #135