Step By Step: How To Dimple A Structural BraceJay Stone, who helped us with this project, first learned from Ron and Sue Fornierâ??s book called Metal Fabricatorâ??s Handbook.01] Here is a piece of uncovered sheetmetal in an interior. It needs to be structural while also looking good. Holes with flared, concave edges from a dimple die are a popular solution these days. Photo Gallery: Step By Step: How To Dimple A Structural Brace - Hot Rod MagazineStep By Step: How To Dimple A Structural Brace | Digg It | Add to del.icio.us