In this study. we have proposed a gelatin-based stone (gelatin stone) with a new polishing mechanism that can polish a free-form surface. To clarify the possibility of using a gelatin stone as a fine polishing tool. we experimentally examined its fundamental polishing performance. https://www.roneverhart.com/Neumann-KK-205-Supercardioid-Capsule-Head-Black-008654-p29875/