Although Takuji owns a miter saw but he likes to use a miter trimmer for the final adjustment of his miters. He uses a two blade mitering trimmer which, if placed in the conventional (manufacturer recommended) position, enables him to process workpieces up to 4” or so wide. But he is also able to slice away much wider parts once his homemade mitering ramp is deployed. He built this ramp from plywood and clamps it to the bed of the mitering trimmer.
Another mitering trick that I learned from Takuji is to wet the end grain of the miter with water before severing their fibers. This softens the fiber and makes the slicing operation effortless. The softer fibers will extend the time between sharpening – the blades are extremely heavy and difficult to sharpen.
We have an identical mitering trimmer in our woodworking program, which I find very handy for trimming accurate miters in boxes and frame making projects.