Hi, I'm Daniel Penselin, and this how to edge a gravel driveway. The things you will need: gloves, a shovel, a driveway and a railroad tie. The first thing to do is rake the gravel away from the grass and make a nice line. Make sure no extra gravel is lying in the path of the railroad tie. Make a long enough open space to lay down the railroad tie or other lining you decide to use. Now, have a friend help you lift the railroad tie and place it on the open area. Finally, walk on the gravel and level it out on the driveway side of the tie. Continue this process for the whole driveway. And that is how to edge a gravel driveway.