■ The so-called “blood explosion” which punctuates the conclusion of Akira Kurosawa’s 1962 movie Sanjuro remains one of the most memorable and influential special effects in film history. Production designer Yoshiro Muraki would later recall this scene was filmed in a single take. No such effect had ever been attempted before, as movies of the time rarely showed violence with graphic detail. Filled with uncertainty, Muraki worried the blood spray he’d rigged up wouldn’t impress Kurosawa, so he added an extra 30 pounds of pressure to the fluid pump. At the moment the pump was activated, the additional pressure caused the compressor hose attached to actor Tatsuya Nakadai to blow a coupling which created a slight, unintentional delay before the fake blood began to spray, and caused a much larger gush of fluid than planned. It sprayed so powerfully Nakadai claimed it almost lifted him off the ground. His heart sinking, as he believed the delay and over-pressure had ruined the effect, Muraki nervously glanced at director Akira Kurosawa, but Kurosawa only nodded in approval.
