How to Fold an Origami Windmill

Medium level, 19 steps. From Fun with Paper Folding (Murray and Rigney), 1928. Public domain.

The animated version shows each fold moving, one step per screen. This page shows every step at once.

All 19 steps

Step 1. Start white side up. Fold in half corner to corner, then unfold.
Step 2. Fold in half along the other diagonal, then unfold.
Step 3. Fold one corner to the center.
Step 4. Fold the next corner to the center.
Step 5. Fold the next corner to the center.
Step 6. Fold the next corner to the center.
Step 7. Turn the paper over.
Step 8. Fold one corner of the new square to the center.
Step 9. Fold the next corner to the center.
Step 10. Fold the next corner to the center.
Step 11. Fold the next corner to the center.
Step 12. Turn the paper over.
Step 13. Fold one corner of the new square to the center.
Step 14. Fold the next corner to the center.
Step 15. Fold the next corner to the center.
Step 16. Fold the next corner to the center.
Step 17. Unfold everything back to the first square, with the four corners folded to the center.
Step 18. Push the four sides in along the creases so each corner square stands up as a leg. Press every leg flat, all turning the same way.
Step 19. Turn the windmill over.
Done. The windmill (Murray and Rigney, Fun with Paper Folding, 1928).