9 half spheroids, yellow 2010
nylon strings, yellow lacquer, 65 x 13 x 90 cm height (photo: Dirk Eisel)

8 spheroids, yellow, 2009
nylon strings, yellow lacquer, 30 x 30 x 280 cm height (photo: Dirk Eisel)

spheroid, yellow, 2007
nylon strings, yellow lacquer, 90 x 90 x 520 cm height (photo: Joachim Graf)

sphere, yellow, 2005
961 steel wires, yellow lacquer, 15 x 15 x 15 cm height (photo: Yukara Shimizu)