Im trying to make a dowel rod catapult and i need a good, big stong rubber band. what is a good rubber band to use
An exercise supply store has huge rubber bands. They are used for resistance stretching and exercises.
Does it HAVE to be a rubber band? Would a mini-bungee cord work instead?
you can always use a bunch of smaller and weaker ones. Possibly several bungee cords.
How about using a small diameter bicycle tire or wheel barrow inner tube. You can cut what you need in width and circumference with scissors.Just pick the tire tube diameter that you will need to fit your catapult.