|  | 9.2 | RJ-45 Jack and Outlet Installation
| 9.2.8 | Preparing a plaster surface for a flush-mounted jack
It is more difficult to cut into a plaster wall than it is to cut into drywall. To achieve the best results, follow these steps. Determine the appropriate location for the jack. Use a hammer and chisel to remove the plaster from the wall so that the lath behind the plaster is exposed. Use a utility knife to carefully trim plaster away from the lath. Place the template against the lathwork so that it overlaps three strips of lath, equally, at the top and bottom of the opening. Trace an outline around the template. Use an electric saw to cut away the full lath strip that is exposed in the center of the opening. Make several small cuts on the full strip, first on one side, and then on the other. Proceed making these small cuts until you have completely cut through the center lath. Be careful when you do this step. If you attempt to cut all the way through one side before cutting into the other side, the saw will cause the lath to vibrate when you make the second cut. This can cause the plaster around the opening to crack and separate from the lath. Finish preparing the opening by sawing notches in the lath strips at the top and bottom.
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