Gouges and large chips on the corners of door frames, jambs, window sills and the like really can't be properly repaired with air-drying wood fillers and putties. The problem is, those materials simply don't get hard enough or bond well enough to stand up to the kind of use or abuse to which they are often subjected. A better choice is polyester resin -- a two part paste and hardner that sets up quickly, can be shaped with standard woodworking tools, sands smooth and accepts just about any paint. There are a couple of tricks to working with this material and getting good results. The video covers them. Polyester resin is inexpensive and available in home centers, hardware and auto parts stores.