first, you need to remove the section of casing you plan to replace. To do
this, I used a jig that helped me make clean, accurate cuts. It's just three
pieces of stock screwed together to create a ledge for a small handsaw (see
Using the jig is even easier than building it. To make the
cuts, hold the jig flush against the casing (outside edge for lefthand side,
inside edge for righthand side). For an accurate cut, the top of the jig should
butt flush underneath the top casing (see photo below right).
good idea to use some painter's tape to protect the wall while you're cutting.
Even still, you'll probably have to touch up a few scratches on the wall when