How to stretch a coil spring effectively and safely?

To stretch a coil spring effectively and safely, follow these steps:

1. Use a spring compressor tool to safely compress the spring before stretching it.
2. Slowly and evenly apply pressure to the spring to stretch it to the desired length.
3. Make sure to wear safety goggles and gloves to protect yourself from any potential accidents.
4. Check the spring for any signs of damage or wear before and after stretching.
5. Always follow the manufacturer's guidelines for stretching the specific type of coil spring you are working with.