Cracks in the Wall

The Makita is a rather powerful tool. The vigor of the rotary sanding process managed to dislodge some weak plaster from the wall.

This happened on the wall where the window and the steam radiator was located. Not surprising, since this is the area most vulnerable to water damage and the mechanical stresses caused by heat from the radiator and the cold air from outside. This would have to patched up later using universal joint compound.

One advantage of sanding the wall down is that it reveals cracks and holes in the wall that need to be patched.