By Reggie Bullard
We squared off the patches for you using a carbide blade.
Crooked lines are better. You can see straight lines from window infills, etc. a mile away. Cutting back the edges of the patch leaving a crooked line also provides good overlap for metal lath:
This patch is a necessary evil for new roof flashing. Sometimes the stucco is so hard an electric chipping hammer is needed.
People view things horizontally. Even a straight line at angle
Of course there are exceptions. For example a very thin 2 inch