A.We recommend using alkaline batteries with our products, as they are great for long-term use and help optimize performance. We don't recommend using Carbon-Zinc batteries. While Carbon-Zinc batteries may work well with low-power devices, they can drain after a short period of time and cause certain products to not function properly.
On the underside of the launcher, each end of the rubber band should be wrapped around a peg on each side of the main launcher and then doubled up and hooked around the center tab of the moveable portion of the launcher.
Here is a picture of an assembled rubber band launcher!