Sheet Metal Fabricator 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. Who are we? Founded in 1849, Ducommun is the oldest company in California. Starting as a hardware supply store during the California Gold Rush and eventually assisted in the birth of the aerospac