Tutorial - how to make a spiral sphere

This tutorial was compiled with Creo Elements / Direct Express to implement a model similar to my file:
Spiral sphere
You can download a free fully functional copy of Creo from PTC site:
http://www.ptc.com/products/creo-elements-direct/modeling-express/
Creo is completely "history-free" and uses the so-called "explicit modeling".

  1. Step 1:

    Screen of Creo Elements/Direct Express, customized by user

  2. Step 2:

    Create a New assembly

  3. Step 3:

    Sphere

  4. Step 4:

    Create a new workplane

  5. Step 5:

    Draw a rectangle and turn 360°

  6. Step 6:

    Place another workplane over inferior face, and draw a sketch

  7. Step 7:

    Create a new part; Spiral

  8. Step 8:

    Create an helix addiction

  9. Step 9:

    Creation of the helix

  10. Step 10:

    Change a part color

  11. Step 11:

    Draw a boring tool

  12. Step 12:

    Boring tool

  13. Step 13:

    Boring

  14. Step 14:

    Result

  15. Step 15:

    Draw another inside boring tool

  16. Step 16:

    Boring

  17. Step 17:

    result, and the round a corner

  18. Step 18:

    Copy and share radial the created spiral

  19. Step 19:

    Copying and sharing commands

  20. Step 20:

    Create a new group "Spiral pair"

  21. Step 21:

    Created group

  22. Step 22:

    Drag and drop "Spiral" into new group "Spiral_pair"

  23. Step 23:

    Copy, but Not share the group of two spiral for 5 times 30°

  24. Step 24:

    Result of duplication

  25. Step 25:

    You can now change the color of a couple of spiral thanks to existing sharing between two paired spiral

  26. Step 26:

    Several colors

  27. Step 27:

    Result

  28. Step 28:

    Also the edges can change in pair rounded or chamfered

  29. Step 29:

    Round edges

  30. Step 30:

    Final result

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