Step 1
Make a preliminary base and lay it flat on the table, with the closed tip pointing at 12 o’clock.
Step 2
Make an oblique valley fold by bringing the upper right edge of the right front flap from right to left along the vertical axis of symmetry.
Crease well, unfold, reverse the fold into a mountain fold, then unfold again.
Step 3
Lift the right front flap vertically. Insert your index and middle fingers between the two layers to open the triangular pocket.
Spread the pocket and flatten it using the folds created in the previous step.
additional information
- You have just made a squash fold.
- The pocket becomes a quadrilateral lying flat, symmetrical along the vertical axis.
- The top layer is an isosceles triangle with a horizontal base.
- The second layer consists of two right triangles whose hypotenuses form a vertical slit.
- A long point extends upward, and two short points extend downward.
Step 4
Turn the model from right to left.
Step 5
Repeat the actions described in steps 2 and 3.
additional information
- You obtain a symmetrical shape with six flaps:
- a small front left flap
- a middle left flap
- a small rear left flap
- a small front right flap
- a middle right flap
- a small rear right flap
Step 6
Rotate the small front left flap from left to right around the vertical axis of symmetry.
Step 7
Rotate the front left flap from left to right around the vertical axis of symmetry.
additional information
- Only one left flap remains.
Step 8
Repeat the actions described in steps 2 and 3.
additional information
- You now have two small left flaps and five right flaps.
Step 9
Turn the model from right to left.
Step 10
Rotate the small front left flap from left to right around the vertical axis.
Step 11
Rotate the front left flap from left to right around the vertical axis.
Step 12
Repeat the actions described in steps 2 and 3.
additional information
- You obtain a kite-shaped model with:
- a long closed point extending upward
- a shorter downward point made of four small free points arranged symmetrically
- four double-layer triangular flaps on each side of the vertical axis
- Creating four petal folds
- The front of the model consists of a central triangle with two side triangles attached by hinge edges.
- Part of each side triangle is hidden behind the front triangle, and part is visible below its lower edge.
- The whole forms a quadrilateral symmetrical along the vertical axis, with a long upper point and a short lower point divided by a vertical slit.
Step 13
Make a valley fold by bringing the lower right edge of the right front flap from right to left along the vertical slit.
Crease well, then unfold.
Step 14
Make a valley fold by bringing the lower left edge of the left front flap from left to right along the vertical slit.
Crease firmly, then unfold.
Step 15
Slide a finger under the lower horizontal edge of the front triangle and fold it upward.
Ensure that a 45° crease forms on each side flap, creating a short upward point.
As you lift the point, the left and right points rise naturally, and the diagonal valley folds of the lower layer begin to fold on their own.
Continue folding the lower diagonal valley folds, bring the side points back to the vertical axis, and flatten the upper diagonal folds that form.
Sharply define all folds.
Step 16
Turn the model from right to left.
additional information
- You are in the same configuration as before step 13.
Step 17
Repeat the actions described in steps 13, 14, and 15.
Step 18
Rotate the front left flap from left to right around the vertical axis.
Step 19
Rotate the front left flap from left to right around the vertical axis.
Step 20
Turn the model from right to left.
Step 21
Rotate the front left flap from left to right around the vertical axis.
Step 22
Rotate the front left flap from left to right around the vertical axis.
Step 23
Repeat the actions described in steps 13, 14, and 15.
Step 24
Turn the model from right to left.
Step 25
Repeat the actions described in steps 13, 14, and 15.
The frog base is ready.
additional information
- The lower part has four long points pointing at 6 o’clock.
- The middle section has four shorter triangular points pointing upward.
- The upper part has a single long point pointing at 12 o’clock.