Image shows an automatic molding machine in operation at Bandai Hobby Center in Shizuoka.
Bandai's Gunpla production plant has 17 units of multi-color injection molding machines jointly developed with Toshiba that run 24 hours a day. It only takes 18 seconds to produce one runner.
Bandai is still the only company in the world that has injection molding machines that can produce 4 different colors on a single runner.
Images and information are from Asahi Dotcom.
