The Dodecahedron of Doom (Onshape Tutorial)

I woke up this morning and thought, “I need a challenge for breakfast.” Because the only thing more tasty than oatmeal, is a challenge.

This tutorial is only for the advanced users. I honestly don’t think you can make a dodecahedron in Solidworks without knowing the exact coordinates of each point before hand.

When you’re done, it will look like this:

Ideally it’s a Platonic Solid
  1. Start by making a regular pentagon with a side length of 20mm. Yes there is a tool for that in Onshape, believe it or not.
  2. Loft two opposing sides to create a surface. Use another loft to get the remaining portion of the pentagon.

    A Pentagon of Doom to start with
  3. And now, for something completely different… Create an assembly and import your surface (not the lame-o Microsoft Surface).
  4. Right click and fix the surface in place. Now import surfaces 1 at a time, and add a Revolute constraint on matching edges of surfaces.
  5. Repeat 10 more times until you have something that resembles a Dodecahedron.

    It’s really shaping up
  6. Now on the far right there is a button for creating a Part Studio In-Context. Then click on the origin of the assembly. A Part Studio will appear with the ghost images of your dodecahedron.
  7. Use the “Transform” command. I put “Transform” in quotes because no actual transformation will occur. Hit the drop down, and select Copy In Place. Now select all 12 sides.
  8. Use the Enclose command on all 12 sides. Violà! Onshape is instrumental in creating this platonic solid.
    Plato would be proud

    Check it out here.

What do you think? Right? Wrong? Pure poppycock?