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Half Octahedron, Make Your Own

3D model description

Half Octahedron
Things are interesting and often confusing in 3D space. How do you dissect a platonic (regular) octahedron? Of course, we could slice it into two square pyramids. But that is a bit boring. Here is a more interesting way to dissect it into two congruent pieces. It is easy to design in Fusion 360 using its dihedral angle [180-arccos(1/3)]. The easiest way to design a platonic octahedron is to extrude a square in two directions at a taper angle of (-acos(1/3)/2). We could also start with an equilateral triangle and then extrude and mirror around. It is a fun process.

There are two versions provided: solids and shelled (2mm). The eighth pieces are also included.

3D printing settings

Rafts:

No

Supports:

No

Resolution:

.1 to .2mm

Infill:

5-20%

  • 3D model format: STL

Creator

STEAM educator, learning from and working with K-12 STEAM teachers to explore new ideas of teaching and engagement. I firmly believe ART is at the core of STEM learning or all human learning! I owe my ideas and designs to the hundreds of K-12 children and teachers and university professors I have had the pleasure of working with, in multiple disciplines-- math, science,engineering language arts, social studies, early childhood education and more! All mistakes, of course, are mine! There is no warranty or liability whatsoever implied or explicit behind the designs or ideas. They are all posted for their potential educational values.

When working with children, please strictly observe all safety and health procedures! Please refer to the NSTA safety guides: http://www.nsta.org/safety/.

LGBU Contact: LGBU@SIU.EDU

License

CC BY


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