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The Deltry Paper Airplane
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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.
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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.
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2. After this point, the result of one folding operation
will be shown together with the next folding instructions.
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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.
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4. Fold the large top triangle (made up of the two small triangles you just
created in step 3), over and down.
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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.
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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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