1996

Stone Carving Master Class at Idyllwild Arts, Idyllwild, California, USA

1998

Stone Carving Master Class at Idyllwild Arts

2000

Stone Carving Master Class at Idyllwild Arts

2002

Marc Adams School, Indiana, USA

2002

Stone Carving Master Class at Idyllwild Arts

2008

Stone Carving Course, Ballenberg, Bern, Switzerland   www.kurszentrum-ballenberg.ch