Back when cars were made of heavy metal and had lots of beautiful curves guys took the time to repair a fender rather than just replace it. Any good metal worker will tell you that you need to match the hammer and dolly as close as possible with the shape of your panel you’re working on. When you’re working on a curvy car like something from the late 1930’s through the 1950’s you will be hard pressed to find a flat panel on the vehicle. This means that you will need to use tools to match. Back in those days the selection of specialty hammers were vast, some being specifically used for one type of car or type of repair!