Photo of a model of a triangular hebesphenorotunda with a few construction aids. Made from cocktail sticks and air-dry clay

Photo of a model of a triangular hebesphenorotunda, a polyhedron made from triangles, squares, pentagons and a hexagon. Made from cocktail sticks and air-dry clay

#Shapetober 31
Triangular hebesphenorotunda

For the last shape of the month it only fits to have the last polyhedron in Johnson's list, and arguably the most beautiful one. Also the only convex polyhedron to feature regular triangles, squares, pentagons and hexagons

Photo of a model of a truncated cube with a construction aid (inlaid square cupola with inlaid octahedron). Truly the turducken of stick-and-ball constructions. Made from cocktail sticks, air-dry clay and play dough.

Photo of a model of a truncated cube, a cube with all its corners cut off by a third. Made from cocktail sticks and air-dry clay

#Shapetober 30
Truncated cube

Not a very complicated shape, but the number of octahedrons make it difficult to construct. I think we've reached the end of what the air-dry clay (and my hands) can safely hold. Not sure how I'm going to make the even larger ones

Photo of a model of a parabiaugmented hexagonal prism with a few support structures, made from cocktail sticks and air-dry clay

Photo of a model of a Parabiaugmented Hexagonal Prism - a hexagonal prism that has two pyramids attached to opposing square faces. Made from cocktail sticks and air-dry clay

#Shapetober 29
Parabiaugmented Hexagonal Prism

A good chunk of Johnson solids are just more normal polyhedra that have various hats on. This hexagonal prism sports two pyramids on its side, but there are also variants with one or three pyramids

Photo of a model of an augmented dodecahedron with a construction aid, which is essentially just some extra feet. Made from cocktail sticks and air-dry clay

Photo of a model of an Augmented Dodecahedron, which is a regular dodecahedron with a little hat. Made from cocktail sticks and air-dry clay

#Shapetober 28
Augmented dodecahedron

Not super happy with this one - I think it's a bit too tall. Dodecahedra are unforgiving to construct, you have to eyeball the angles and hope for the best instead of relying on the support constructions for the correct lengths and angles
Rainbow colours though

Photo of a model of a tridiminshed icosahedron, a shape consisting of three pentagons and five triangles, made from cocktail sticks and air-dry clay

#Shapetober 27
Tridiminished icosahedron

A few days ago I said that the Bilunabirotunda was the only shape with pentagon-pentagon-triangle corners. That is clearly wrong: this one has six (!) of those (red and purple).
It was something half-remembered that I didn't look up to confirm. How negligent

Photo of a model of an icosidodecahedron under construction, a mess of cocktail sticks, air-dry clay and Barbie-flavoured play dough

Photo of a model of an icosidodecahedron, a shape consisting of triangles and pentagons in a regular pattern, made from cocktail sticks and air-dry clay

#Shapetober 26
Icosidodecahedron

Biggest boy so far.
My support constructions get more elaborate as I move to larger models. I use Barbie-flavoured dough for extra vertices - it's more stable than the clay when soft and helps ilthe clay harden in the correct shape

Photo of a model of a Sphenocorona, a polyhedron consisting of two squares and 12 triangles, made from cocktail sticks and air-dry clay. Pigeon is also in the background

#Shapetober 25
Sphenocorona

One of the more odd Johnson solids.
The joints in my models are coloured in a way that vertices that are identical with respect to symmetry get the same colour. For instace the orange corners have a mirror plane between them.

Photo of a model of a triaugmented triangular prism, a polyhedron consisting of 14 triangles, which looks like a 3D version of the Triforce. Made from cocktail sticks and air-dry clay

#Shapetober 24
Triaugmented triangular prism

Apart from the Platonic solids, there are five convex polyhedra that are made entirely out of equilateral triangles. This one looks like a thicc Triforce

Photo of a model of a rhombic cuboctahedron, a shape consisting of squares and triangles in a regular pattern, made from cocktail sticks and air-dry clay

#Shapetober 23
Rhombic cuboctahedron

Getting more confident with making larger shapes as I'm getting more familiar with the clay and figuring out better support structures (that I keep forgetting to photograph)

Photo of a model of a bilunabirotunda, an oblong polyhedron consisting of pentagons, squares and triangles, made from cocktail sticks and air-dry clay.

#Shapetober 22
Bilunabirotunda

A lovely shape, and the only regular-faced polyhedron with two pentagons and one triangle sharing a corner (the yellow balls).
It consists of two Lunae (triangle-square-triangle band) and two Rotundae (two pentagons and two triangles sharing a corner (blue))

Photo of a model of a triangular bicupola, a polyhedron consisting of squares and triangles, made from cocktail sticks and air-dry clay

#Shapetober 21
Triangular bicupola

The cuboctahedron's evil twin, twisted and corrupted

#Shapetober 20
Cuboctahedron

An incredibly satisfying shape. Its radius is the same as its edge length, so you can make a support construct by simply connecting every vertex to the central point. Also looks mesmerizing

Photo of a model of a pentagrammic antiprism made from cocktail sticks and air-dry clay

Photo of a model of the other pentagrammic antiprism made from cocktail sticks and air-dry clay

#Shapetober 19
Pentagrammic antiprism

Double feature today. You can make an antiprism from a shape by stacking two of them, slightly offset and connecting them with triangles. Usually there is just one way to do it, but for some star shapes there are two ways, one saner one and one squat and scary

Photo of a model of a square pyramid made from air-dry clay and cocktail sticks

#Shapetober 18
Square pyramid

Didn't have time to do something elaborate today, so it's gonna be the most famous Johnson solid instead

Photo of a flattish construction consisting of triangles and a hexagon made from air-dry clay and cocktail sticks

Photo of a truncated tetrahedron model made from air-dry clay and cocktail sticks

#Shapetober 17
Truncated tetrahedron

My first Archimedean solid. I had to build it in stages cause any face larger than a square gets very unstable very quickly

#Shapetober 16
Square cupola

First shape with an octagon. Just straight up skipped hexagons, ha

yaaayyyy
[ #justshapes&beats #jsab #shapetober2025 #shapetober ]

Photo of my disembodied hand holding a stick-and-ball model of a gyrobisfastigium - a polyhedron made from two triangular prisms attached at their square faces. Also pigeon cage in the background.

#Shapetober 15
Gyrobifastigium

Probably my favourite Johnson solid

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Всем привет! В этом году агрессивно врываюсь в инктобер по #jsab !
Надеюсь, что получится дожить до конца! 👊

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День 1. Corrupt.

A list of art prompts for a JSaB Inktober-style challenge, called Shapetober. It reads "Beyond Shapes & Beats: A JSaB Anniversary Fanzine" at the top. The title reads "Shapetober 2025", and the prompts are: 1. Corrupt 2. Player 3. Tree 4. Cave 5. Spider 6. Crystal 7. Paradise 8. Flower 9. Boss 10. Cozy 11. Water 12. Island 13. Sun 14. Boat 15. Rain 16. Barracuda 17. Mushroom 18. Volcano 19. Lycanthropy 20. Helicopter 21. Gears 22. Factory 23. Fall 24. Cube 25. Cold 26. Tower 27. Level 28. Moon 29. Annihilate 30. TIO 31. Purify

After some wait, we finally have our completed #SHAPETOBER 2025 LIST for you all! If you want, feel free to @ us when you post your works for this prompt list, and you may get the chance to have your piece featured in the zine when it releases!

#jsab #justshapesandbeats #shapetober2025

Results are in: we WILL be making a Shapetober prompt list this year!! We've been brainstorming, and should have that ready sometime before October starts, most likely within the week. :)

#JSaB #shapetober