This origami $2.50 Pyramid is so called because it was originally made with one $2 bill and one 50¢ coin. Together that makes $2.50. The hardest part may be finding a clean, crisp $2 bill. Sometimes banks will carry freshly minted money in late December.
This model was designed by Denny North and you can see his video here.
Instructions for Origami $2.50 Pyramid
Step 1:
Fold the dollar bill in half lengthwise. Unfold.
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Step 2:
Fold the dollar bill in half (top to bottom).
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Step 3:
Using the crease made in step 1, fold down the top corners so they meet in the middle.
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 Unfold. |
Step 4:
Make an inside reverse fold: lift up the top-layer of the right-side of the dollar bill.
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 Push down the top-corner. |
 Press down flat completely.
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 Swivel the flap back to the right side. |
Step 5:
Repeat the inside reverse fold on the left-side of the model. |
Step 6:
Swivel the top-right layer towards the left once more.
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Step 7:
Fold down the top corners towards the center so you form a steep pyramid shape.
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Step 8:
Swivel one layer back towards the right side of the model.
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Step 9:
Repeat on the left side of the model: fold the top-left layer towards the right.
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Step 10:
Fold down the top corners to get a steep pyramid shape.
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Step 11:
Swivel the flap back to the left side.
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Step 12:
Fold up the top-layer of the model. Make the fold as high as it can go without tearing the dollar bill. The layers underneath will dictate how far up you can fold.
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Step 13:
Mountain fold the bottom layer.
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Step 14:
Fold in the bottom edges of the model towards the center as shown.
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Step 15:
Turn the model over.
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Step 16:
Repeat step 14 on this side of the model: fold in the bottom edges towards the center.
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Step 17:
Rotate the model so it stands upright.
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Step 18:
Pull the flaps away from one another.
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Step 19:
Pinch the folds made in step 14 & 16 so they don’t unravel. Pull the flaps apart as far as they can go.
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Step 20:
This is how the model will look like. Note that the center section points upwards like a pyramid. Turn the model over.
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Step 21:
Fold up the bottom flap. Make the fold at the junction where the model begins to get thick due to the layers.
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Step 22:
Fold down the top flap. Try to make the folds so the top and bottom sections are the same size.
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Step 23:
Slide in a half-dollar coin.
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Step 24:
Fold the side flaps over the coin and tuck it under the pyramid.
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Step 25:
Try to make the sides the same size so the base is square with parallel and perpendicular edges.
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 Done!
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Left: $2.50 Pyramid if you started with the green-side of the dollar bill facing up.
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