油あぶら目め鑢やすり

noun

ultra-fine rasp; ultra-fine file

A very fine-toothed file or rasp used for delicate finishing work in metalworking, woodworking, or similar crafts.

• 仕し上あげには油あぶら目め鑢やすりを使つかうと表ひょう面めんが滑なめらかになる。

  Using an ultra-fine file for finishing makes the surface smooth.