Do I need to sharpen it?
Not yet. Add a stone when a tomato skin stops giving way.
| When | What |
|---|---|
| Day one | Nothing. Use it. |
| When a tomato skin resists | One #1000 whetstone |
| Later, if you enjoy it | A finer stone (#3000–6000) |
| Never | Pull-through sharpeners, steel rods |