Question

why we cannot cut peice of ice easily?

Answer 1

Answer:

In effect, each tooth of a saw is a small knife and, yes, the saws did become dull and have to be re-sharpened due to the presence of grit and other particulates frozen in the ice. Anything you cut dulls your knife. ... Ice is pretty hard so it's going to wear your edge out faster than something like marshmallows.