Japanese antique tool grinding rust off use whetstone carpenter's or sewing? from Japan

Japanese antique tool grinding rust off use whetstone carpenter's or sewing? from Japan {IMG} http://school-repair.com/japanese-antique-tool-grinding-rust-off-use-whetstone-carpenters-or-sewing-from-japan/ I'm Japanese and I bought Japanese antique tool. By the rust off, and make it usable.