U.S. Air Force Master Sgt. Paul Allen, 173rd Fighter Wing structural maintenance technician, points out a point-of-failure on a mold cast from dental plaster, rather than wood, which structural maintenance team used to shape a fairing rib on an F-15C, Nov. 5, 2021 at Kingsley Field in Klamath Falls, Ore. 173rd FW Maintainers found using a hammer to form the metal around the mold immediately cracked it. (U.S. Air National Guard photo by Master Sgt. Jefferson Thompson)
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