Spray painting a golf wedge is a pretty simple project but not easy to do. First, you need to sand the surface of the wedge to remove the previous finish. Then soak the golf wedge in water for about an hour to get the surface damp. After that, you can sand the golf wedge with 320-GRIT sandpaper to roughen the surface and make it ready for the paint. You can use a primer or paint thinner to clean up the surface and make it free of oil. After applying the primer, you can use spray paint to spray the golf wedge with a light coat. Try to spray paint in a well-ventilated area. Wash the golf wedge with soap and water to remove the paint. The next step is finishing with a clear coat.