Alexander Horned Sphere
by osj1961, published
Liked ByView All
Give a Shout Out
If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.Print Thing Tag
A lovely example surface from Topology. The horned sphere is a pathological embedding of a sphere into 3-space. See the wikipedia article for details.
I used full supports when printing this on my Makerbot. Separating the support material from the model was highly non-trivial!
Just (3/13/16) uploaded a new .stl with fixes for some issues with the polygon orientation on the meshes.
How I Designed This
OpenSCAD is awesome! For this design I created a module (called "spin" in the file "surf_of_revolution.scad") that allows one to do some of the fancy things that can be done in the builtin function "linear_extrude," but in this case while creating a rotary extrusion. So for example a twist factor and a scale factor can be applied to the surface of revolution.
Select a service to print this Thing and ship it to you
Alexander Horned Sphere by osj1961 is licensed under the Creative Commons - Attribution license.
What does this mean?
- You must attribute (give credit) to the creator of this Thing.
- Remixing or Changing this Thing is allowed.
- Commercial use is allowed.
Show Some Love
Say thanks by giving osj1961 a tip and help them continue to share amazing Things with the Thingiverse community.Tip Designer
We're sure osj1961 would love to see what you've printed. Please document your print and share a Make with the community.
To post a Make simply visit this Thing again and click I Made One to start uploading your photo. It’s even easier to post a Make via the Thingiverse Mobile app (available via Google Play and Apple App Store).