I am on the cusp of installing the interior trim and in order to plan ahead I spent a little time today learning how to cut a wide cove for the corner pieces. I have read about this technique in a couple of books but today was the first time I tried it. I was a little intimidated but it turned out to be very simple. I used scrap white pine to practice. I ripped the pine from an old off cut from a Lowe's 2x4 (they must have the crappiest stud pine in the country). I cut it down to about 2' long and 1 1/2" x 1 1/2". Then, I marked the edges so there would be enough remaining of the outside corners to smoothly abut the horizontal trim that fits the bottom and top edge of the cabin sides and ties into the corner trim. I then made a 45 degree cut removing one edge from side to side to eliminate one old corner edge which provided a flat surface. Then, I clamped a straight edge to the surface of the table saw (I used my home made tapering jig as the straight edge). I set it at a random angle (this is the tricky part). I set the fence so that the center of the wood was lined up over the center (tallest) part of the saw blade. The less of an angle the narrower and the deeper the cove. The wider the angle, the wider and shallower the cove. Then, I fired up the saw and gently pushed the pine along the fence and over the blade--the wood is being push over the blade at an angle. I set the blade very shallow (maybe 1/8"). I checked to make sure the cove was centered and made a small adjustment to the fence to precisely line it up on the center of the wood. Then, I made a series of passes until the cove was the width and depth I wanted to achieve. Last, I trimmed the end and took it up to the boat to see how it looked. Pretty neat . . . and not difficult. I think I will add some feather boards to better hold the mahogany in place when I shape it for the real McCoy. The machining marks left in the cove by the table saw were not bad, but the cove would need to be cleaned up with abrasive paper and preferably a foam sanding block cut to the shape of the cove itself. The trick will be figuring out how all the trim will come together, i.e. will physically connect. This is the most important part of trim work--be it in a boat or in your home. All things considered equal, in my opinion, the trim is what really makes final product look professional . . . or amateurish. This will be a little tricky and I have some thinking to do about what will work best. I could very easily make this too complicated. There is an art to making something look elegant and simple at the same time . . . I am still very much learning how to develop that skill.