Thingiverse
Johnson Polyhedra by pmoews
by Thingiverse
Last crawled date: 3 years ago
Johnson polyhedra have faces composed of regular polygons: triangles, squares, pentagons,hexagons, octagons and decagons. There are only 92 such polyhedra. Instructions for making paper models are available, but with stl files one could print more durable examples.
I recently came across the netlib library of polyhedra athttp://netlib.sandia.gov/polyhedra/
which includes the Johnson polyhedra. I was pleased to see that it would be easy to convert the files to openSCAD polyhedron comands. Polyhedron commands are
a compact way of describing a polyhedron and, when executed, output an stl file.
I wrote a fortran program to convert the files; however a few files had errors. I had corrected most errors with openSCAD's unusual, but marvelous, "thrown together" mode when I was informed that the errors had already been noticed and corrected by George Harthttp://www.georgehart.com/virtual-polyhedra/netlib-info.html
There is a link on the George Hart page to a set of VRML files which display the Johnson polyhedra with color coded faces. References are also given.
Using the corrected files I was able to finish the conversion. You will find the 92 scad files in Johnson_Scad_Files.zip and the 92 stl files in Johnson_Stl_Files.zip.
To get a large version of the polyhedra it is best to print a hollow structure. Five examples of hollow polyhedra stl files are included here together with a sample openSCAD file, hollow_j03.scad.
I recently came across the netlib library of polyhedra athttp://netlib.sandia.gov/polyhedra/
which includes the Johnson polyhedra. I was pleased to see that it would be easy to convert the files to openSCAD polyhedron comands. Polyhedron commands are
a compact way of describing a polyhedron and, when executed, output an stl file.
I wrote a fortran program to convert the files; however a few files had errors. I had corrected most errors with openSCAD's unusual, but marvelous, "thrown together" mode when I was informed that the errors had already been noticed and corrected by George Harthttp://www.georgehart.com/virtual-polyhedra/netlib-info.html
There is a link on the George Hart page to a set of VRML files which display the Johnson polyhedra with color coded faces. References are also given.
Using the corrected files I was able to finish the conversion. You will find the 92 scad files in Johnson_Scad_Files.zip and the 92 stl files in Johnson_Stl_Files.zip.
To get a large version of the polyhedra it is best to print a hollow structure. Five examples of hollow polyhedra stl files are included here together with a sample openSCAD file, hollow_j03.scad.
Similar models
thingiverse
free
Johnson Polyhedra Duals by pmoews
...enerated the duals are included in johnson_duals_scad.zip. the stl files of all the duals are included in johnson_duals_stl.zip
thingiverse
free
Hollow Polyhedra: Prisms and Antiprisms by pmoews
...t site, "virtual polyhedra" by george hart has more information, seehttp://www.georgehart.com/virtual-polyhedra/vp.html
thingiverse
free
Hollow polyhedra: Catalan Solids by pmoews
...ut them is available on the internet; "catalan solids" entered in google usually results in more than one million hits.
thingiverse
free
Toroidal Polyhedra by pmoews
...kew polyhedra with multiple holes. see the openscad code which includes references to the "visual polyhedra" web site.
thingiverse
free
Customizable Convex Polyhedra by pdragy
...tp://www.thingiverse.com/thing:16508), which have the face data from the vrml files converted to triangles to work with openscad.
thingiverse
free
Johnson Polyhedron-Dual Compounds by pmoews
...nd_j27.stl
compound_j34.stl
compound_j37.stl
compound_j74.stl
compound_j35.stl
compound_j38.stl
compound_j67.stl
compound_j68.stl
thingiverse
free
Two Color Archimedean Solids - 1 by pmoews
...o much bookkeeping to keep track of without help. openscad's "thrown together" command can be used to catch errors.
thingiverse
free
Johnson Compounds as Ornament by pmoews
...stl and compound_j68_color_2.stl
the openscad code that produced the above files is collected in compound_johnson_color_scad.zip.
thingiverse
free
Two Polyhedra, One Vertex Set by pmoews
... to form a dodecahedron. all the polyhedra are related to the 3 fold symmetry pair in thing:1380887. openscad code is included.
thingiverse
free
Unistable Polyhedron by jbrownkramer
.... "unistable polyhedron." from mathworld--a wolfram web resource. http://mathworld.wolfram.com/unistablepolyhedron.html
Polyhedra
thingiverse
free
Concave Polyhedra by kitwallace
... removed pyramid.
see my blog for details and polyhedra index. .http://kitwallace.tumblr.com/post/80458298236/concave-polyhedra
thingiverse
free
Toroidal Polyhedra by pmoews
...kew polyhedra with multiple holes. see the openscad code which includes references to the "visual polyhedra" web site.
thingiverse
free
Generated Polyhedra by kitwallace
...there are two versions of the dual stub hexpropellododecahedron - one small, the other large - must make the goldilocks version.
thingiverse
free
polyhedra star ( ninth stellation of icosahedron )
...polyhedra star ( ninth stellation of icosahedron )
thingiverse
a simple to make polyhedra star..
thingiverse
free
Convex Polyhedra ( @pdragy edited) by harnelbe
...convex polyhedra ( @pdragy edited) by harnelbe
thingiverse
made from
customizable convex polyhedra designed by @pdragy
thingiverse
free
Modulated Polyhedra by kitwallace
... from the website http://kitwallace.co.uk/3d/solid-index.xq
it needs to be customised for appearance and the modulating function.
thingiverse
free
Customizable Convex Polyhedra by pdragy
...tp://www.thingiverse.com/thing:16508), which have the face data from the vrml files converted to triangles to work with openscad.
thingiverse
free
Convex Polyhedra
...ttp://www.thingiverse.com/thing:233540
created with customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=233540
thingiverse
free
Archimedean polyhedra by henryseg
...chimedean polyhedra by henryseg
thingiverse
these models are featured in figure 2.9 of visualizing mathematics with 3d printing.
Pmoews
thingiverse
free
Pheasant by pmoews
...pheasant by pmoews
thingiverse
123d catch version of a ceramic pheasant. the stl file is at 40% scale.
thingiverse
free
A Pelican by pmoews
...s
thingiverse
a neighbor's pelican model. it was digitized with autodesk's recap photo. the stl file is scaled at 40%.
thingiverse
free
Walrus by pmoews
...ews
thingiverse
a thrift store walrus, gray, weights over a kilogram, maybe a garden ornament. a 123d-catch copy at half scale.
thingiverse
free
Five Gourds by pmoews
...five gourds by pmoews
thingiverse
here are five gourds suitable for a fall display. they were digitized with 123d catch.
thingiverse
free
Vase with Lid by pmoews
...vase with lid by pmoews
thingiverse
a neighbor wanted a copy of a favorite vase. here are half size versions as stl files.
thingiverse
free
Pineapple by pmoews
.... fairly accurate - prints well without support. for other stl files based on real pineapples see things 4560, 7228 and 438266.
thingiverse
free
Ceramic Swan by pmoews
...ceramic swan by pmoews
thingiverse
a thrift store ceramic swan without markings. the 123-d catch file is at half scale.
thingiverse
free
Basset Hound by pmoews
...basset hound by pmoews
thingiverse
an autodesk recap photo copy of a basset hound bought at an estate sale. about 4/10 scale.
thingiverse
free
A Black Bear by pmoews
... by pmoews
thingiverse
a 123d catch version of a wood carving of a bear. a souvenir of new mexico. the stl file is full scale.
thingiverse
free
Model Fish - Trout by pmoews
...model fish - trout by pmoews
thingiverse
openscad "doddle". meant to be a rainbow trout.
Johnson
3ddd
$1
samuel_ johnson
... капитоне , кожа
chesterfields1780
samuel_ johnson
3ddd
$1
Massive Johnson 7617
...assive johnson 7617
3ddd
johnson , massive
люстра massive johnson 7617, бра в комплекте.
3ddd
$1
Massive Johnson 7616
...assive johnson 7616
3ddd
johnson , massive
люстра massive johnson 7616, бра в комплекте.
3ddd
free
Easy Chair by Edward Johnson
...easy chair by edward johnson
3ddd
edward johnson
easy chair by edward johnson
turbosquid
$20
Stand Johnson
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$20
Johnson 170
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$10
Mattew Johnson
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
3d_export
$20
Johnson 170 3D Model
...johnson 170 3d model
3dexport
royal botania
johnson 170 3d model viktor.arch.199087624 88310 3dexport
turbosquid
$10
Stylized Johnson M1941
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
3d_export
$16
character dwayne johnson the rock
...cter dwayne johnson the rock
3dexport
man character design for actor dwayne johnson the rock ready made characters for animation