http://www.plastermagic.com/video-how...
In this video, part 1 of a series showing you how to repair a hole in a plaster wall, Rory Brennan, founder of Big Wally's Plaster Magic, shows you how to stabilize broken plaster and lath in preparation for the patching plaster. The hole surrounds an electrical light switch box in a house built around 1900. In Part 3, he'll show you how to apply the finishing coat.

For more tips and how-tos on plaster wall and plaster ceiling repair, visit http://www.plastermagic.com