FastCap Crown Stop Fence. The Crown Stop Fence is a great tool that makes it easier to cut crown molding. It is simple and easy to use and gives you an accurate cut every time! It has two parallel “T” grooves cut into the face of the fence, allowing the slide bars to move freely up and down to fit any crown molding up to 7-1/2. When not in use, you can store the slide bars in grooves on the backside of the Crown Stop Fence. To install simply, remove the existing fences and slide in your new Crown Stop Fences instead. A HUGE upgrade for your DeWalt Saw in just seconds!