Turn the base so the straws are on the bottom and decide which end will be the front and which will be the rear of your car. The tape needs to touch both the balloon and the straw for a couple of tight, spiral wraps. Slide the straw into the balloon about 2” (5 cm) and use tape to make it an airtight connection. The goal is to insure a tight seal to the straw in the next Step. Use the scissors to trim this ring off of the balloon. Since they hold the axles, the straws need to be as parallel to each other and as perpendicular to the centerline of the base as possible.Īlmost all balloons have a mouthpiece on them that you blow through to inflate them. Securely tape the two straws you just cut to the underside of the base. It comes in colors, too, so be choosy.Ĭut out your base material so that it measures about 3 x 6” (7.5 x 15 cm). It’s not too expensive and you’ll need only a single piece. It’s a foam material sandwiched between very stiff paper. It’s available in most school or business aisles of grocery stores and pharmacies as well as at any business supply store. One is very rigid cardboard that holds its shape well. You have some choices to use for the frame or base of your car. These pieces will hold the axles of your car. Grab the scissors and cut the two pieces from the straw. Use the ruler to measure two, 3” (8 cm) pieces from one of the straws.
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