of simple to very complex parts. The example above shows three simple roll formed spacers, a complex stretch formed and chemically milled (i.e. chem milled) thick gauge outer skin..., and a very complex drop hammer formed thin gauge inner stiffening skin. Stainless steel duct assembly used on the Lockheed C-130 cargo transport engines. We designed and manufactured... manufacturing processes were used to form these thin gauge stainless steel parts, including drop hammer form, stretch form, brake form and hydro form. The following are the aluminum...