I made the mistake of repairing the holes in my office walls. They had accumulated over the years. You know, pictures come and go. When I bought the house there were not one, not two, not three but four cable outlets. Then the carpenter ants arrived. The guy in the moon suit listened to the walls, drilled a dozen holes and sprayed the nest. There were a lot holes to fill. Good thing that years ago a plasterer had taught me how to fill, sand, prime and paint.

It took a day to fill and sand. Another day to prime and another day to paint. Looks good . After I