During the 1960s and 1970s, Tuttle enjoyed great success as a contemporary furniture designer, with such notable creations as the Eldorado chair and Streamline table. His furniture was often characterized by organic shapes, bright colors and innovative materials such as molded plastic.
Tuttle was also a pioneer in the use of lasers to create decorative patterns on furniture surfaces. He won several awards for his designs, including the Roscoe Award in 1971 and the American Furniture Award in 1986.
Over the years, Tuttle continued to work in the design field, creating projects for clients such as IBM, Boeing and the City of Los Angeles. His contribution to American furniture design is considerable, and his work is exhibited in museums and galleries around the world.