"After having trouble welding sheets of aluminum together," writes Danish industrial designer Jonas Trampedach, "I found a riveting technique suitable for making 90 degree connections between separate sheets." This allowed him to create the Rivet Chair:

Things get wild around the back:

"The Rivet design is a symbiosis between craftsmanship and industrial production. Based on the traditional hand construction technique of riveting, the Rivet [Chair] is made of laser-cut raw aluminum sheets, hereafter joined together by hand using a basic hammer tool. A celebration of the purity of aluminum, left untreated with the material's honesty in mind."

The Rivet Chair is in production by Danish design brand Frama.