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Step 2: The launcher

Without launch capability, any missile you build is garbage...

So we will begin there.

Brace yourself... this is a long step.

Begin by taking a standard piece of card stock and fold it at 2 inch intervals as shown. Flip it over and repeat.

Mark and cut 2 equal sections at the outer edges, perpendicular to the folds. Flip these over and space them at 1 inch away from the center piece Align the folds so that they are opposite in direction.

Use masking tape to reattach the edge sections to the main.

Refold the sections as shown to create an open sided box with a bellows configuration.

Along the bellows open side, tape the sections down to create a bellows wedge.

Using the wedge as a guide fold another section of card stock to create an outer cover. Roughly cut to size.

Select a piece of office paper and make a small tube that is 8.5 inches long using a pen. Roll tightly and tape the tube closed.

Cut 4 equal slits 1 inch long, in one tube end and fold about half of the tube diameter sections of the cut outward leaving some sections to form the tube.

Cut an equal size hole in the card stock cover about one inch from the folded edge in the center.

Insert the tube through the hole and tape the folded sections to the outside. Fold the remainder sections over on the inside then tape these to  the inside. Make sure to leave the tube unobstructed.

Tape the cover to the bellows then trim. re-tape all seams to create an air tight air chamber that has the tube as the only air inlet and outlet.