Sheet metal hydro forming has been around since the mid 1950's. It is a method of forming a sheet metal blank onto a mold; by moving the material into a rubber bladder that forms the cavity section of the shape. The flexible rubber Diaphragm allows for round, square and irregular shapes, as well as minimizes and sometimes eliminates draw marks normally created by traditional die forming. Hydro forming lends itself both to prototype and production quantities. Lead times are cut dramatically as hydro forming requires simple tooling as compared to other methods of manufacture.