The Sheet Metal—Hydroforming process group lets you estimate manufacturing times and costs for sheet hydroforming fabrication processes and subsequent machining operations. The cost model includes estimates of hard tooling costs. This chapter describes the costing details and inputs that are available for the Sheet Metal—Hydroforming process group. For detailed information on other sheet metal processes, see the chapters Sheet Metal—Hard Tooled and Sheet Metal—Soft Tooled, Sheet Metal—Transfer Die, and Sheet Metal—Stretch Forming.