Skip to content

Tetrahedral Spikey, Tetrahedron

?
Creation's quality: 0.0/5 (0 votes)
Evaluation of members on the printability, utility, level of detail, etc.
  • 3k views
  • 1 like
  • 4 downloads

3D model description

Tetrahedral Spikey: Each side of the big triangle is about 86mm. A raft would be necessary for printing; support is not needed.

Starting with an equilateral triangle, one can extrude at a tapering angle of -19.4712 degrees (arccos(1/3) -90 ) for a tetrahedron, and then continue to extrude in the same way each central triangle (1/4 of the initial triangle) on the four faces. This is a simple and meaningful design project for inviting students to explore the world of 3D design. Of course, a touch of trigonometry would be useful, too.

Warning: The spikey can be dangerous for small children. Please consider flexible filament when possible.

References:

https://en.wikipedia.org/wiki/Tetrahedron
http://mathworld.wolfram.com/Spikey.html

3D printing settings

Rafts:

Yes

Supports:

No

Resolution:

0.15-.2mm

Infill:

0 to 10%

Notes:
Trying stop printing at a percentage between 50% and 90% at 0% infill, see what happens.

How I Designed This
Extrude at a tapering angle of -19.47 degrees.

  • 3D file format: STL
  • Publication date: 2017/12/26 at 19:31

Creator

Designs 218
Downloads 10.3k
Followers 88

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


Best sellers of the category Game


Add a comment


Would you like to support Cults?

You like Cults and you want to help us continue the adventure independently? Please note that we are a small team of 3 people, therefore it is very simple to support us to maintain the activity and create future developments. Here are 4 solutions accessible to all:

  • ADVERTISING: Disable your AdBlock banner blocker and click on our banner ads.

  • AFFILIATION: Make your purchases online by clicking on our affiliate links here Amazon, Gearbest or Aliexpress.

  • DONATE: If you want, you can make a donation via PayPal here.

  • WORD OF MOUTH: Invite your friends to come, discover the platform and the magnificent 3D files shared by the community!