| What is Chinkin (sunken gold)? |
When gold leaf or gold powder is placed in the carved parts with points or lines, it creates a pattern that shines brightly in gold color. If silver is used instead of gold, it is called chingin, and vermilion color is called chinshu. Since the engraved parts become the finish as they are, mistakes are not allowed.

| Making Process of Chinkin |
①Carve the pattern
②Rub urushi into the carved parts
③Apply cotton with gold powder
④Wipe off excess powder to complete

<Source: "What is Traditional Kōgei?" Edited by Japan Kōgei Association East Japan Branch / Published by Unsodo, P.34>