How to fold a Masu Box

Fold the corners to the center, stand up the walls and tuck the corners in to make an open square box. Good for holding small things.

Steps to fold a Masu Box (15 steps)

Step 1Start with the white side up and turn the paper so a corner points toward you.
Step 2Fold the top corner to the center.
Step 3Fold the bottom corner to the center too.
Step 4Fold the left corner to the center too.
Step 5Fold the right corner to the center too. All four corners now meet in the middle (a blintz fold).
Step 6Fold the top edge to the center line, crease firmly, and unfold.
Step 7Crease the bottom edge the same way and unfold.
Step 8Fold the left edge to the center line, crease, and unfold.
Step 9Crease the right edge the same way and unfold.
Step 10Unfold the top triangle and open it out.
Step 11Unfold the bottom triangle too. Leave the left and right triangles folded.
Step 12Stand the right side straight up along its crease. This becomes a wall of the box.
Step 13Stand the left side up the same way.
Step 14Lift the top triangle. Tuck the corners of the side walls inward as the far wall stands up, then wrap the triangle over the wall and lay its tip on the bottom of the box.
Step 15Lift the near triangle the same way, tuck in the corners, wrap it over the wall, and lay its tip on the bottom. The box is finished.
Finished