A method I have used for wood that I intend to paint, unless you don't care if the repair is to be seen, is to completely cut out the damaged section. This will give you nice straight, smooth surfaces. Then cut a peice to fit into the area, glue it in and then shape it by cutting, planeing and/or sanding, or whatever method works best for you.
To reduce the amount of wood removed, on that particular piece you may just plane the current surface flat, glue a new piece to it and then shape it.
Last edited by daryl; 01-01-2010 at 04:10 PM.