Extended Birdbase
Thanks to Joshua Koppel who is the designer of this base for letting me show the diagrams here.
With the help of his base I was able to create some nice new models.
Start with a square sheet of paper.
1. Prefold in halfes and along the diagonals in both directions (Valley and Mountain).
2. Valley fold the corners to the middle.
3. Valley fold the corners to the middle.
4. This is what you should get. Open up the model again.
5. Valley fold the two sides to the middle.
6. Open the model and make the two valley folds simultaneously. Flatten the model along existing creases.
7. Repeat step 6 on the lower half.
8. This is what you should get. Turn the model around.
9. Valley fold the center square in half along the diagonal.
10. Swing the flap over.
11. Squash fold along existing creases.
12. Swing two flaps over.
13. Squash fold along existing creases.
14. (View enlarged and rotated) Inside reverse fold to the middle.
15. Swing one flap over.
16. Inside reverse fold to the middle.
17. Swing the flap back and turn the model around.
18. Swing one flap to the left.
19. Repeat Steps 14-17 on this side.
20. Squash fold along existing creases.
21. This is what you should get. Repeat Step 20 on the other three flaps.
22. Petal fold the flap down.
23. This is what you should get. Repeat Step 22 on the other three flaps.
24. The finished extended birdbase. You should have the same number of flaps on both sides.
Starting from the extended birdbase you can create the following models:
