you can use bondo but I would use kitty hair on it first. it is pretty much fiberglass in a can. Fill the kitty hair in from the back letting it ooze out the front, wait 20 mins or a little longer, then sand. After it is smooth use bondo. Smooth it down and fade it into the rest of the paint. Prime, paint, and clear and you are done. This will mostly work with everything you would want to shave, except for door handles, key holes, and bigger objects. If you want to know how just let me know