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A stable and fast paper airplane, the Twin Shark is a development on a previous design, the Shark. All credit goes to lieuwe for the original design, this is a development.

TAA USAF Designation: A4-2

Step 1: Materials

Required:
1 Piece of 8.5 by 11 inch paper
Tape
Optional:
Pencil

Step 2: X Fold

Fold one corner of your paper to the edge of the opposite side. Then open and repeat on the other side.

Step 3: Tucking Preparation

Pull the top down over itself. Then open. After, fold the paper in half length-wise.

Step 4: Tucking Folds

Tuck the paper into itself as shown in the photos. Then proceed to pull the paper up to the center front as cited. Repeat on the other side.

Step 5: Wing Fold

Fold your Twin Shark in half along the center with it's large dorsal fin on the inside. About 3/4 inch above the center fold of the aircraft, fold the wing down to reveal the vertical fin. Repeat on the other side. 

Step 6: Fin Folding

Fold one of your fins down along the wing root as shown. Repeat on the other side. Then pull the tips of the fins up to the wing root as pictured.

Step 7: Winglet Folds

Open your aircraft as shown in the picture. Fold in half along its center and fold a winglet from the outer half inch of the wing. Repeat on the other side.

Step 8: Taping

Open your aircraft up and tape the cited places.

Places to tape:
Nose front of the fin folds (along the leading edge)
Rear
The wings just forward of the rear on top


The plane should be secure after this step.

Step 9: Flight

Your Twin Shark is now ready to fly into whatever mission you sent it, as one of the most stable and fast planes you can have.
beauty plane man who dicovered the plane is great thanx! for posting
thanks it works.
Brilliant plane!!!! Got a bit stuck on Step 4 put got past. BRILLIANT!!! :)
Thanks.
this is a very good paper airplane. I like it.
i dont under stand how to fold it
Well, to make this fold you need to have made the X Fold. After that is done, you pull the center of the X (the crease seen in the first picture) to the center length fold. After this is done, repeat the pull to the center on the other side. Then flatten the paper evenly over itself. Once you've created this "cover" fold you should proceed to pull the corners up to the front. After that, this step is complete.
I've used that fold many times, it's really useful for both planes and water bombs/ boxes.
Yep, these folds are commonly known as waterbomb bases due to their usual applications.
Never mind XD I forgot to fold the paper in half
Cool plane, but that fold is tricky. I still cant get it, maybe you should make a Youtube video on how to fold it

About This Instructable

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Bio: I am someone who mass produces paper airplanes and am always developing new designs. I post regular updates on Twitter and Google+. Follow me there ... More »
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