Step 2: Using the template with a flush trim router bit
A flush trim router bit has a guide bearing which is exactly even with the cutline of the knives (pic 2). The height of the bit is set so that the bearing follows the edge of the template as the blades trim the other piece of wood. The end result is an exact copy of your template. When the trimming is complete, the 2 pieces of wood are simply pried apart and the carpet tape removed (pic 3).