Forces and springs: Stretching and bouncing
- Springs and elastic are unlikely to injure skin seriously: the odd nip can be regarded as a learning experience. However, they may permanently damage eyes. Eye protection should be worn whenever there is a chance that an elastic cord or a spring may flick into the eye.
- When demonstrating using the long length of fishing pole elastic, ensure that the tension does not become large. If there is any misbehaviour avoid the exercise or stop it immediately. Ensure that the tension is released gently.