SteveB wrote:

I want to cut some grooves in concrete to help drain some areas where the
concrete man had low spots. These grooves would be about 1/4" deep and
wide. I was thinking of using a diamond blade on a SkilSaw, and turning it
45, and running it along a 2x4 fence with bricks to hold the end down. Is
there an easier better way?

Steve

Self leveling concrete resurfacer. Correct the problem, don't band-aid
it.