Bals Sphere Fidget Toy

Bals Sphere.3mf

Colour Switch Fidget Toy

Connector.stl

Tetrahedrinsanity Bowl

Tetrahedrinsanity Bowl.stl

Magnetic Parallelepiped Blocks

This simple shape can be used create numerous complex and interesting 3D tilings and formations.
The parallelepiped is essentially an octahedron with two tetrahedrons attached to opposite faces, so the tiling is based on the octahedron and tetrahedron pattern found in an octet truss.
The holes are sized for 1/8" cylindrical neodymium magnets, 1/32" long. This size of magnet was selected for cost reasons and to minimize the repulsive forces between the magnets at each tip. This size of magnet is not very strong on its own but suffices when there are multiple faces joined together. If you choose to scale the model larger, you will want to use larger magnets.
The six magnets at the two tips are all inserted with the same polarity, the remaining six magnets around the center are inserted with opposite polarity.
It is a good idea to clean the holes out first with a 1/8" drill bit. CA glues works well.
See here for a video on how to assemble the first and second level cuboctohedron: https://youtu.be/Fpc0BToJeA0 
The first level cuboctohedron is made with 12 individual parallelepiped shapes, the second level cuboctohedron is made with 36 individual parallelepiped shapes


Spiralized Octet Truss Modular Snap Struts

Display Only.stl

Tetrahedron Octahedron

All.3mf

Tetrahedron

Tetrahedron.stl

Stylish Tetrahedron Vase V1

Stylish Tetrahedron Vase_V1.3mf

Tetrahedrons // Folding Polyhedra

tetrahedronbig-wire.stl

Tangled Tubes

Tangled Tubes Assembled Display Only Do Not Print.stl

600-Cell Central Rings.stl

This is a three-dimensional shadow of selected cells of the four-dimensional shape called the “600-cell.”

See here for video: https://youtu.be/IhW48X29e0g 

The 600-cell is one of six regular convex four-dimensional shapes. It is composed of 600 tetrahedral cells.

The full 600-cell is so ridiculously complex that it nearly impossible to see or understand in its entirety, so it is helpful to view it in parts.

If you look closely at this selection of cells, you can see how it is composed of nine interlocking rings connected by “struts.”  In the full 600-cell, these small “struts” are in fact part of complete rings. This gives some idea of how large and complex the full shape would be.

This model is designed for resin printing.


Stylish Tetrahedron Vase V2

Stylish Tetrahedron Vase_V2.stl

Tetrahedron Solid

Tetrahedron Solid.stl

tetrahedron

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Bals Sphere Fidget Toy

Colour Switch Fidget Toy

Tetrahedrinsanity Bowl

Magnetic Parallelepiped Blocks

Spiralized Octet Truss Modular Snap Struts

Tetrahedron Octahedron

Tetrahedron

Stylish Tetrahedron Vase V1

Tetrahedrons // Folding Polyhedra

Tangled Tubes

600-Cell Central Rings.stl

Stylish Tetrahedron Vase V2

Tetrahedron Solid