The two designers met while studying at the School of Applied Arts in Zurich, Switzerland, and began working together shortly after graduating in 1956. In 1966, they set up their joint company, Nagel & Stoffi, and began producing brass sculptures from interlocking brass rods and balls. These sculptures were very popular in the 1960s and became collectors' items.
In addition to their brass sculptures, Nagel & Stoffi also created acrylic cigarette holders, which were very much in vogue in the 1970s. These cigarette holders consisted of a transparent acrylic plate with notches for cigarettes, and were available in a variety of bright colors.
Although Nagel & Stoffi are no longer in business today, their creations are still highly sought-after by collectors and design enthusiasts. Their modern, minimalist style has influenced many contemporary designers, and their work is often considered emblematic of Swiss design aesthetics.