Rust remover *Recommend
Rust remover - Middle grit
You can remove rust using this.
1. Drop water on the knife
2. Rub the rust off the knife
You cannot sharpen the edge by this. This is just for removing rust.
If you rub the edge, the edge loses sharpness.
Real Japanese carbon steel gets rusty easily.
Even it gets rust easily, professionals use carbon steel knives.
The cutting is totally different from stainless.
They use this eraser too.