This might cause as a dent in the skull of a hard headed person. A dent would not show on a plaster surface as a result of this simple test. Wallboard, plastic, and wood would show evidence of a depression and would certainly tear causing damage. This is a simple test where scientists take a steel brush attached to a monstrous looking machine. With a flip of a switch, monster machine starts scrubbing the wall panel treated with plaster.
Mom can only scrub so hard.
Try this machine on your car and you would soon need a new paint job. If little Mikey is acting up, just dare him to scrub the walls with steel wool. Guaranteed, even Mikey will not damage the surface. An average person using steel wool would effortlessly scratch the surface of plastic or wood . Resale Value Resale value increases when homes use plaster on walls and ceilings.