Confirm the bevel angle. Measure and mark the cut line. You will be cutting the right edge of the length of molding.
How to Rip Narrow Boards with a Circular Saw-Step-By-Step Step 1.
Take a long and straight piece of wood slab to use as a platform. Set the first piece of molding on the work surface back side up and extending to the left. Place the long side of your circular saw shoe against the factory edge of the guide board. You can now just clamp this down with the cut edge of the thinner board on the line you want to cut and then run the saw along the factory edge to get a precise cut every time no measuring just clamp and cut.