Cai Cuo-Qiang’s Head On glass install Published December 2, 2013 at 1620 × 1080 in Cai Cuo-Qiang’s Head On glass install ← Previous Next → Transportation on and off site is a major consideration when dealing with glass. Once at GOMA, the glass was manoeuvred with a crane onto a glass trolley with a special, spider like glass sucker.