"Martin H. Eastburn" wrote in message
...
One issue with that wide tool is the energy or psi on it.

Looks like a massive tool holder is needed. I don't think a hand
can hold steady with that - Not even with a point source.

Martin

If you have a steady hand, it works fine on wheels, even free hand. That's
a cluster diamond, and cuts quite well. It makes getting a flat wheel much
easier, and actually dresses much better than does a single point diamond
because the small pieces of diamond can't get polished to a ball. Diamond
is so much harder than a wheel that it cuts the typical grinding wheel with
ease, as long as it's presented to the wheel with a sharp edge. Clusters
do just that.

Harold