rope and knife blade

army background blade breaking broken cable collapsible connecting connection cord cordage cut cutlery cutting dagger danger dangerous detail details equipment fall fiber flaw folding fragile fragility frayed fraying hobby injure insecure iron isolated jackknife kill knife lacerate lifeline line metal metallic metaphor nylon object panic penknife pocket portable problem razor reliability reliable rescue risk rope safety secured separation sharp stab stainless steel stretch survival thread tool twine unsafe utensil utility weak weakest weapon weight white