Dakkatsu-kanshitsu (脱活乾漆 [dakkatsu kanshitsu])

Dakkatsu-kanshitsu is “hollow dry-lacquer” construction: a form is built over a temporary core, reinforced with cloth and lacquer, then the core is removed, leaving a lightweight shell. It is historically important in sculpture and high-end craft because it allows complex forms with controlled thickness. The strength comes from the lacquer-cloth composite rather than a solid wooden body.