Caring for carbon-steel blades and preventing rust
Written by Mattias Höög · Last updated
Short answer
Wipe a carbon-steel blade dry after use, especially after green wood, and apply a thin coat of food-safe oil before storage. Store it dry and outside a leather sheath for long periods. A grey or blue patina is normal and helps protect the steel; orange rust is not.
Daily care
- Wipe the blade clean and dry after carving. Green wood sap is wet and acidic.
- Apply a thin film of food-safe oil such as camellia oil or mineral oil.
- Never put a carving knife in the dishwasher.
Patina vs rust
A patina is a stable, darkened oxide layer that forms with use and slows further corrosion. Red or orange rust is active corrosion. Remove it early with a fine abrasive or rust eraser, then oil the blade.
Storage
Leather can hold moisture and tanning chemicals, so do not store a knife in its sheath for months. Keep it in a dry place, lightly oiled.
Frequently asked questions
- How do I stop my carbon steel knife from rusting?
- Keep it dry, wipe it after use and apply a thin coat of oil before storing it.