How to Make a Catapult with Tongue Depressors and Rubber Bands

Catapults, ancient mechanical devices used to launch projectiles, hold a significant place in military history. Their ability to hurl objects over great distances revolutionized warfare and influenced the course of civilizations. This article aims to provide detailed instructions for constructing a simple yet functional catapult using readily available materials: tongue depressors and rubber bands.

Materials Needed

• 10 Tongue Depressors
• 7 Rubber Bands
• 1 Plastic Bottle Cap
• Hot Glue Gun and Glue Sticks
• Scissors (optional)
• Safety Goggles (recommended)

Safety Precautions

Working with hot glue involves potential hazards. It is crucial to prioritize safety by wearing safety goggles to protect your eyes from glue splashes. Additionally, ensure adequate ventilation to avoid inhaling harmful fumes.

Step-by-Step Instructions

1. Assemble the Base:
   • Arrange seven tongue depressors side by side, aligning their edges.
   • Secure them together using two rubber bands, one at each end, to form a flat base.
2. Create the Upright Support:
   • Take two tongue depressors and join them at one end with a rubber band, forming a “V” shape.
   • Position this upright support perpendicular to the base, with the rubber band joint resting on the center of the base.
3. Attach the Upright Support:
   • Secure the upright support to the base using two rubber bands, one on each side.
   • Ensure the upright support is stable and stands upright.
4. Construct the Arm:
   • Take the remaining tongue depressor and cut it in half (optional).
   • Attach one half to the top of the upright support using a rubber band, creating an arm that extends forward.
5. Add the Bottle Cap:
   • Hot glue the plastic bottle cap to the end of the arm, which will serve as the projectile holder.
6. Test and Adjust:
   • Load a small, lightweight object (e.g., a marshmallow or a small ball) into the bottle cap.
   • Gently pull the arm back and release it to launch the projectile.
   • If the projectile does not launch as desired, adjust the tension of the rubber bands or the angle of the arm until you achieve the desired performance.

Tips and Troubleshooting

• Use high-quality rubber bands to ensure sufficient tension and durability.
• Ensure the tongue depressors are straight and free of warps or bends.
• Experiment with different types of projectiles to find the ones that work best with your catapult.
• If the catapult is not launching projectiles far enough, try increasing the tension of the rubber bands or adjusting the angle of the arm.

Alternative Designs and Variations

• Explore different designs by varying the number of tongue depressors used for the base or the arm.
• Experiment with different materials for the projectile holder, such as a small cup or a spoon.
• Add decorative elements or paint the catapult to personalize it.

Safety Disclaimer

Catapults can launch projectiles with considerable force. Always use the catapult responsibly and under proper supervision. Aim away from people, animals, and fragile objects to avoid any potential harm or damage.

Conclusion

With careful construction and attention to detail, you can create a functional and enjoyable catapult using tongue depressors and rubber bands. This project not only provides hands-on experience with basic engineering principles but also encourages creativity and experimentation. By following the instructions and applying the tips provided, you can build a catapult that will entertain and amaze your friends and family.

References

• ThinkStretch: https://thinkstretch.com/activity/popsicle-stick-catapult/
• Instructables: https://www.instructables.com/Catapult-Made-With-Tongue-Depressors-and-Rubber-Ba/
• Scouter Mom: https://scoutermom.com/24838/build-a-craft-stick-catapult/

FAQs

1. What materials do I need to make a catapult with tongue depressors and rubber bands?

   You will need the following materials:
   – 10 Tongue Depressors
   – 7 Rubber Bands
   – 1 Plastic Bottle Cap
   – Hot Glue Gun and Glue Sticks
   – Scissors (optional)
   – Safety Goggles (recommended)

2. How do I assemble the base of the catapult?

   – Arrange seven tongue depressors side by side, aligning their edges.
   – Secure them together using two rubber bands, one at each end, to form a flat base.

3. How do I create the upright support for the catapult?

   – Take two tongue depressors and join them at one end with a rubber band, forming a “V” shape.
   – Position this upright support perpendicular to the base, with the rubber band joint resting on the center of the base.

4. How do I attach the upright support to the base?

   – Secure the upright support to the base using two rubber bands, one on each side.
   – Ensure the upright support is stable and stands upright.

5. How do I construct the arm of the catapult?

   – Take the remaining tongue depressor and cut it in half (optional).
   – Attach one half to the top of the upright support using a rubber band, creating an arm that extends forward.

6. How do I add the bottle cap to the catapult?

   – Hot glue the plastic bottle cap to the end of the arm, which will serve as the projectile holder.

7. How do I test and adjust the catapult?

   – Load a small, lightweight object (e.g., a marshmallow or a small ball) into the bottle cap.
   – Gently pull the arm back and release it to launch the projectile.
   – If the projectile does not launch as desired, adjust the tension of the rubber bands or the angle of the arm until you achieve the desired performance.

8. What safety precautions should I take when using the catapult?

   – Always wear safety goggles to protect your eyes from glue splashes.
   – Ensure adequate ventilation to avoid inhaling harmful fumes from the hot glue.
   – Use the catapult responsibly and under proper supervision. Aim away from people, animals, and fragile objects to avoid any potential harm or damage.