Sheet metal jobs focus on working to design, fabricate, or install sheet metal and related products. Your duties as a sheet metal fabricator revolve around making sheet metal for commercial, industrial, or residential purposes. Sheet metal installers or technicians work in a specific area, such as installing duct networks for HVAC systems. The responsibilities of sheet metal mechanics involve affixing sheet metal to aircraft bodies or other structures. As a sheet metal estimator, you lay out the ductwork in blueprint form, while some technicians install, repair, or upgrade ducts or other sheet metal installations. You can find work as a welder in the sheet metal industry as well.