Guillermin, who was known to have had outbursts from time to time on the set, got into a public shouting match with executive producer Federico De Laurentiis (son of producer Dino De Laurentiis). After the incident, De Laurentiis was reported to have threatened to fire Guillermin if he did not start treating the cast and crew better. Rick Baker, who designed and wore the ape suit in collaboration with Carlo Rambaldi, was extremely disappointed in the final suit, which he felt was not at all convincing. He gives all the credit for its passable appearance to cinematographer Richard H. Kline. The only time that the collaboration of Baker and Rambaldi went smoothly was during the design of the mechanical Kong mask. Baker's design and Rambaldi's cable work combined to give Kong's face a wide range of expression that was responsible for much of the film's emotional impact. Baker gave much of the credit for its effectiveness to Rambaldi and his mechanics.