Sheet Metal Fabricators may set-up and operate various machines, hand tools, and pneumatic tools which may heat, bend, form, press, stretch, shrink, straighten, notch, punch, roll, cut, refine, grind, or drill metal in coherence with machine drawings and customer specifications. Starting as a hardware supply store during the California Gold Rush and eventually assisted in the birth of the aerospace industry in Southern California by providing aircraft aluminum to early aerospace pioneers like Lindbergh, Douglas and Lockheed.