Truncated octahedron

cotty

@s shepherd said:

Here's a quick and dirty way of drawing this type polyhedron.

Screenr

SS

cotty, thanks for revealing screenr.

Box

A truncated Octahedron is a very simple structure if you know the trick. People struggle with the calculations of the angles involved, but they are pretty simple too when you know them. You only need to know 54.736 deg and 35.264 deg add up to 90 deg.
However, if you haven't had that particular bisection of 90deg drilled into you at birth, you'll find the simple split cube method easy to use and remember.

Start with a cube of any size, cut through it on the diagonal mid points and remove one side, this will create one eighth of the shape which can then be rotated and flipped to make the rest.
No calculations, no head scratching no hair pulling.

See vid for clarity.

[screenr:2owcfgcb]QkmH[/screenr:2owcfgcb]

gangaiah

How did u make one pyramid into octahedron? What option have you used to get exact alignment of pyramid to for octahedron. Can you please tell me ?

cotty

You don't need a plugin for this shape, only basic tools...
Screencast

cotty

Is it not the shown shape in the screencast?

gangaiah

It is not. Please see that two adjacent facets are not same. One is rectangle and another one is trapezoid. There is a difference.

Thanks and regards,
Gangaiah

cotty

Does this screencast help as a start?

micro_thing_2.zip

gangaiah

Thanks for sending screen shot. But, it is only half of the structure. Making it full was little tricky. The similar way, I have also followed and partially succeed.

ely862me

A better image would help more!

rodrigonotor

Take a look at this page

George W. Hart --- Index

Index to George W. Hart's web pages, including geometric sculpture, polyhedra, and trilobites.

(georgehart.com)

and this

Stella - Create Polyhedra and Nets! Platonic, Archimedean, Catalan, Kepler-Poinsot, uniform, and dual polyhedra, their stellations, and polyhedron nets

Stella4D, Great Stella and Small Stella are polyhedron programs. Create Platonic, Archimedean, uniform, dual polyhedra, stellated polyhedra, and polyhedron nets

(www.software3d.com)

Regards

rodrigonotor

Maybe this can help

Error 404 (Not Found)!!1

(sketchup.google.com)

Truncated octahedron - Wikipedia

(en.wikipedia.org)

mitcorb

see if this is close

gangaiah

Can you please tell me how to draw, the model of the attached file. It is 2D image, similar to truncated octahedron. Kindly make a video and write what tool you are using in constructing such shapes.

Thanks and regards,
Gangaiah.

gangaiah

Dear Cotty,
Can you please teach me, how to draw the shape attached herewith.

Thanks and regards,
Ganagiah.

gangaiah

Can any one help me in drawing this shape?

gangaiah

I want to know how to make some portion of an object porous?

pilou

have you an image of a "porous object" ?