## How to Make a Bungee Jumping Cord: A Step-by-Step Guide
Bungee jumping is a thrilling activity that involves jumping from a tall structure with a long elastic cord attached to your feet. The cord stretches as you fall, then snaps you back up towards the structure. Bungee jumping cords are made from a special type of rubber that is strong and elastic. If you’re interested in learning how to make your own bungee jumping cord, follow these steps:
### Materials
You will need the following materials to make a bungee jumping cord:
* Rubber tubing (at least 100 feet long and 1 inch in diameter)
* Polyester webbing (at least 50 feet long and 2 inches wide)
* Carabiners (4)
* Figure-eight knot
* Sewing machine
* Tape measure
* Scissors
### Instructions
1. **Measure and cut the rubber tubing.** The length of the rubber tubing will depend on the height of the structure you will be jumping from. As a general rule, the rubber tubing should be about twice as long as the height of the structure.
2. **Fold the polyester webbing in half.** The polyester webbing will be used to make the harness that you will wear around your waist and legs. Fold the webbing in half lengthwise and sew the two edges together.
3. **Attach the rubber tubing to the polyester webbing.** Take one end of the rubber tubing and thread it through the loop created by the polyester webbing. Tie a figure-eight knot in the rubber tubing to secure it to the webbing.
4. **Repeat Step 3.** Take the other end of the rubber tubing and thread it through the other loop created by the polyester webbing. Tie a figure-eight knot in the rubber tubing to secure it to the webbing.
5. **Attach the carabiners to the polyester webbing.** Take the two carabiners and attach them to the two loops created by the polyester webbing. The carabiners will be used to connect the bungee jumping cord to the structure you will be jumping from.
6. **Test the bungee jumping cord.** Before you use the bungee jumping cord, it is important to test it to make sure it is safe. To test the cord, attach it to a secure structure and jump from a short distance. The cord should stretch and snap you back up towards the structure.
### Tips
* Use high-quality materials to make your bungee jumping cord. The rubber tubing and polyester webbing should be strong and durable.
* Make sure the knots you tie in the rubber tubing and polyester webbing are secure.
* Test the bungee jumping cord before you use it to make sure it is safe.
* Never jump from a structure that is too high for the length of the bungee jumping cord.
* Always wear a helmet and other protective gear when bungee jumping.
### Conclusion
Bungee jumping is a safe and exciting activity, but it is important to make sure you are using a safe bungee jumping cord. By following the steps outlined in this article, you can make your own bungee jumping cord that is strong and durable.