BilunaBirotunda Star

Who knew that a geometrical shape could have such a great name! Try this fourteen pointer with four pentagonal points, two rectangular points, and eight triangular points.

 
 

Project Info

Paper required: two sheets 8.5 x 11 inch (or A4)

Finished Project size: 5 inches (12 cm)

Difficulty Level: beginner

 
 
 

INSTRUCTIONS

STEP 1

Print the pattern onto the two matching paper sheets of your choice. The back side of the paper will be partly visible in this project, so i painted it blue.

Read the pattern key included in the General Instructions.

 

Step 2

Cut our the four pattern pieces by cutting on all black lines.

Photo 1. Inside of Pattern Parts 1 and 2 after Step 2

Photo 2. Outside of Pattern Parts 1 and 2 after Step 2

 

STEP 3

On all four pattern pieces, fold the green lines as valley folds and the red lines as mountain folds.

Photo 3. Inside of Pattern Parts 1 and 2 after Step 3

Photo 4. Outside of Pattern Parts 1 and 2 after Step 3

 

Step 4

On Parts 1 and 3, glue Flap A to the other Flap A, Flap B to the other Flap B, and Flap C to the other Flap C. On Parts 2 and 4, glue Flap D to the other Flap D, Flap E to the other Flap E, Flap F to the other Flap F, and Flap G to the other Flap G.

Photo 5. Inside of Pattern Parts 1 and 2 after Step 4

Photo 6. Outside of Pattern Parts 1 and 2 after Step 4

 

Step 5

Attach Part 1 to Part 2. Do this by gluing Flap L on Part 1 to Flap L on Part 2, Flap K on Part 1 to Flap K on Part 2, and Flap J on Part 1 to Flap J on Part 2.

Photo 7. Project after Step 5, View 1

Photo 8. Project after Step 5, View 2

 

Step 6

Attach Part 3 to the project. Do this by gluing Flaps P, Q, and R on Part 3 to Flaps P, Q, and R on the assembled project.

Photo 9. Project after Step 6, View 1

Photo 10. Project after Step 6, View 2

 

Step 7

Complete the Bilunabirotunda Star by attaching Part 4 to the project. Do this by gluing Flaps W, M, N, H, U, X, S, T, O and V on Part 4 to the similarly labelled flaps on the assembled project.

Photo 11. Completed Bilunabirotunda Star, View 1

Photo 12. Completed Bilunabirotunda Star, View 2

 

Photo 13 . Completed Bilunabirotunda Star, View 3

Photo 14. Completed Bilunabirotunda Star, View 4

 

The base for this star is a stretched version of the bilunabirotunda, Johnson Solid #91. The squares are stretched into rectangles for this project.