Hourglass Chair Hourglass Chair from Ellen Bertschi Hourglass Chair Fall 2014This chair was built using a single 4x8' sheet of cardboard, and no tape or glue. It can withstand over 250 lb of weight, including torque. Early ideation An earlier model of my chair, which did not include enough seat support. Orthographics gLike Hourglass Chair Fall 2014This chair was built using a single 4x8' sheet of cardboard, and no tape or glue. It can withstand over 250 lb of weight, including torque. Industrial Design Share R 7 n Ellen Bertschi Student at Georgia Institute of Technology Atlanta, GA Follow Contact