Figure 1 Football
Step1: Create a pentagon on XY plane whose excircle has a radius of 80mm.
Figure 2 Pentagon on XY plane
Step2: Create a hexagon. Draw a line from any corner of the pentagon in 3D Sketch, the angle between the line and the pentagon edge is 120 degrees. Then create a plane (Plane 1) based on this line and one edge of the pentagon. On Plane 1, create a hexagon which shares an edge with the pentagon.
Figure3 Hexagon on Plane 1
Step3: Find the football center. Draw a line (shown as Axis 1 in Figure 4) along the Z axis. It is vertical to the pentagon naturally. And then draw another line (Axis 2 in Figure 4) from the hexagon center and make it vertical to the hexagon. Their intersection point is the football center.
Figure4 Find Football Center
Step4: With football center as a vertex, create pyramids based on the hexagon and the pentagon respectively.
Figure5 Create pyramids
Step5: Create a sphere shape centered at football center, set the diameter to 220mm. Then make a 2mm thick shell based on the sphere.
Figure6 Combine(Intersect) between the pyramids and shell sphere
Step6: Pattern the yellow hexagon piece along the Z axis.
Figure 7 Pattern hexagon piece
Step7: Copy the red pentagon piece together with a yellow hexagon piece along Axis 2.
Figure 8 Copy one pentagon and one hexagon
Step8: Pattern the result derived from Step7 along the Z axis.
Figure 9 Pattern the result of Step7
Step9: Taking Plane 2 as a reference plane, mirror all shapes.
Figure 10 Mirror all shapes
Step 10：Move the mirrored half of the shapes 36 degrees along the Z axis.
Figure 11 Move the mirrored half
Step11: Render your design in KeyShot and get an attractive football for World Cup.
Figure12 Rendered design
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