Why should sail needles be oiled after being used?

Sail needles are typically made of metal, and like many metal tools, they are susceptible to environmental factors that can lead to corrosion or rust. Oiling sail needles after use creates a protective barrier on their surface, which prevents moisture from coming into contact with the metal. This is particularly important for tools that might be exposed to marine environments, where saltwater and humidity can accelerate rusting. Regularly oiling the needles not only extends their lifespan but also ensures that they remain effective and safe to use in sailmaking and repairs. Proper maintenance of sailing tools is crucial for operational efficiency and safety on the water.