To present the illusion that the Enterprises elevators moved between decks, corridor pieces were wheeled out of sight to change the hall configuration while the turbolift doors were closed. Background equipment such as computer terminals were rented when possible instead of purchased outright. Some designed props, such as a redesigned phaser and communicator, were vetoed by Paramount executives in favor of existing materials from The Motion Picture. Additional communicator props were built by John Zabrucky of Modern Props. The Enterprise was refurbished for its space shots, with its shiny exterior dulled down and extra detail added to the frame. Compared to the newly built Reliant, the Enterprise was hated by the effects artists and cameramen; it took eight people to mount the model, and a forklift truck to move it. The Reliant, meanwhile, was lighter and had less complex internal wiring. The spaceship miniatures were photographed against a blue screen, which in post production allowed them to be composited with background scenery which had itself been photographed independently of the foreground miniatures. Any reflection of blue on the ship's hull would appear as a hole on the film; the gaps had to be patched frame by frame for the final film. The same camera used to film Star Wars, the Dykstraflex, was used for shots of the Enterprise and other ships. The barren desert surface of Ceti Alpha V was simulated on stage 8, the largest sound stage at Paramount's studio. The set was elevated 25 feet off the ground and covered in wooden mats, over which tons of colored sand and powder were dumped. A cyclorama was painted and wrapped around the set, while massive industrial fans created a sandstorm. The filming was uncomfortable for actors and crew alike. The spandex environmental suits Koenig and Winfield wore were unventilated, and the actors had to signal by microphone when they needed air. Filming equipment was wrapped in plastic to prevent mechanical troubles and everyone on set wore boots, masks, and coveralls as protection from flying sand. Spock's death was shot over three days, during which no visitors were allowed on set. Spock's death was to be irrevocable, but Nimoy had such a positive experience during filming that he asked if he could add a way for Spock to return in a later film. The mind meld sequence was initially filmed without Kelley's prior knowledge of what was going on. Shatner