[chevyrestoguy]

Straightening an aluminum is grille is a test of patience. Go slow, and don't take big swings at it. The problem with the aluminum grilles is that when they dent it stretches the metal, and it doesn't like to go back into shape.

If/when you hammer and dolly, don't use anything with a sharp edge, including the hammer. If you do, you'll put "donkey tracks" all over the grille that you'll never get out. Pieces of wood work well in this case. Take a look at each dent closely and determine what direction the hit came from. With this knowledge, you can "reverse" the dent by working your way from the edge to the center. This method helps prevent further stretching of the metal. You may have to use pliers to bend the edges back into shape. Remember: almost all pliers have teeth, so make sure you tape the jaws to prevent plier marks.

Take it slow, be patient. Don't hesitate to walk away from it for a while as you're working it. When you get frustrated, that's when it can get ruined.

You won't be able to make it perfect, but you can it looking a lot better than it does right now.