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The Deltry Paper Airplane


Picture of finished Delty paper airplane


The Deltry Paper Airplane is easy to fly, and very easy to make. It flies slowly, and very smoothly and gently. And it holds together nicely. It's a good bet to become the standard paper airplane people make, because it's easy and the results are amazingly good.


Because this is the simplest paper plane here, and the first; pardon us for explaining how to create it quite slowly and carefully, so that everyone can follow along, in twelve very simple steps.

Remember that a simple dashed line is a "valley fold" (the paper goes down where that line is, and up on both sides of that line) and a dashed-and-dotted line is a "mountain fold" (the paper goes up along that line). For a paperfolding tutorial see The eight fold way or Wikipedia.


Diagram one and instructions for folding the Deltry folded paper airplane - crease

1. Take an 8 1/2 by 11 inch sheet of paper, and crease it along the middle, by folding it in half lengthwise along the dashed "valley fold" line shown and unfold again.



unfold, leaving crease - making Delty paper airplane

2. After this point, the result of one folding operation will be shown together with the next folding instructions.



fold tips down - making Delty aeroplane

3. Now fold down the top corners inward to the center crease along the dashed "valley folds" shown, making two new right-angle triangles visible in illustration 4.




Diagram one and instructions for folding the Deltry folded paperairplane - crease

4. Fold the large top triangle (made up of the two small triangles you just created in step 3), over and down.



unfold, leaving crease - making Delty aeroplane

5. Fold the lower part of the tip of the large triangle up again. But note - not quite all the way up to the top.



fold tips down - making Delty aeroplane

6. Leave about 3/8ths of an inch of space from the top. This will help the flaps to lock under tightly and keep the airplane together when it's done.

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