Got some rigid polyurethane foam, Styrofoam or soft upholstery foam you want to cut? Smuggle the electric carving knife out of the kitchen and use that. It works fabulously for any cut you need to make. Just don’t get busted at the border by the kitchen cop! But if you do, it’s safe to say you didn’t wreck the knife. Thanks to Chip Larson for this sharp tip.