Saturday, August 9, 2025

 Building Wooden Archimedean Solids

da Vinic's Polyhedra Φ Project #3


Truncated Cube: Edge Length 2.75": Circumradius 4.8917"

Truncated Octahedron: Edge Length 2.75": Circumradius 4.3481"

Truncated Cuboctahedron: Edge Length 2.75": Circumradius 6.3734"

Truncated Icosahedron: Edge Length 2.75": Circumradius 6.8145"


The study of polyhedra develops spatial reasoning and imagination while providing the foundation for points in 3D  space to a vertex-plan view drawing of 2D pointsPrecise geometric forms are powerful examples to show off one's mastery, as they require a clear understanding of the relationship between 3D objects and 2D projections.[George Hart: 2022]

Top Row Left to right: Rhombicosidodecahedron, Small Rhombicuboctahedron, Snube Cube, and Cuboctahedron. Next row, left to Right: Truncated Cuboctahedron, Truncated Cube, Truncated Octahedron, and Truncated Icosahedron.


                                                            Polygon Table Saw Sleds

Hexagon Table Saw Sled


Hexagon Table Saw Sled


Square Table Saw Sled




Truncated Cuboctahedron
Material: Squares-Yellowheart, Octagons-Purpleheart, Hexagons-Sapele


Archimedean Solid Truncated Cuboctahedron table saw blade tilt angle settings:
6 Octagons
8 Hexagons
12 Squares

Dihedral Angle
144.73561°
Polygon Saw Blade Bevel Angles
Hexagon: 22.5°
Square: 12.76439°

Dihedral Angle
125.26438°
Polygon Saw Blade Bevel Angles
Octagon: 32.23561°
Hexagon: 22.5°



Glue up Templates for Truncated Cuboctahedron
Cut and glue time: 5 Hours.







Truncated Cube

Material: Equilateral Triangles-Yellowheart, Octagons-Purpleheart


Archimedean Solid Truncated Cube table saw blade tilt angle settings:

6 Octagons
8 Equilateral Triangles

Dihedral Angle
125.264389683°
Polygon Saw Blade Bevel Angles
Equilateral Triangle: 9.73561°
Octagon: 45°

Glue up Templates for Truncated Cube
Cut and glue time: 2 Hours.




Truncated Octahedron




Material: Squares-Sapele, Hexagons-Purpleheart

Archimedean Solid Truncated Octahedron table saw blade tilt angle settings:

6 Squares
8 Hexagons

Dihedral Angle
125.264389683°
Polygon Saw Blade Bevel Angles
Square: 19.47122°
Hexagon: 35.26439°


Glue up Templates for Truncated Octahedron
Cut and glue time: 3 Hours.








Truncated Icosahedron: Soccer Ball


Material: Pentagons-Bolivian Rosewood, Hexagons-Ash

Archimedean Solid Truncated Icosahedron table saw blade tilt angle settings:

12 Pentagons
20 Hexagons

Dihedral Angle
142.62263°
Polygon Saw Blade Bevel Angles
Pentagon: 16.47221°
Hexagon: 20.90515°

Glue up Templates for Truncated Icosahedron
Cut and glue time: 6 Hours.


















Only 5 more Archimedean Solids to build out of the 13 total. 


Saturday, August 2, 2025

 Building Wooden Archimedean Solids

da Vinic's Polyhedra Φ Project #2


Cuboctahedron: Edge Length 2.75": Circumradius 2.75"

Small Rhombicuboctahedron: Edge Length 2.75": Circumradius 3.84714"

Snube Cube: Edge Length 2.75": Circumradius 3.6952"

Rhombicosidodecahedron: Edge Length 2.75": Circumradius 6.1406"


The study of polyhedra develops spatial reasoning and imagination while providing the foundation for points in 3D  space to a vertex-plan view drawing of 2D pointsPrecise geometric forms are powerful examples to show off one's mastery, as they require a clear understanding of the relationship between 3D objects and 2D projections.[George Hart: 2022]

Left to right: Golen Rectangle Rhombicosidodecahedron, Standard Rhombicosidodecahedron, Small Rhombicuboctahedron, Snube Cube, and Cuboctahedron.

 Not museum quality, but they look great. I gave it my best shot with my old eyes. I found it easy to cut the polygon pieces, but a real challenge to glue the polygon shapes with a perfect fit. Then I found myself over-sanding on some of the polygon faces, which creates ridges on the adjoining polygon faces. 



Rhombicosidodecahedron

Material: Squares-Yellowheart, Equilateral Triangles-Bubinga, Pentagons-Bolivian Rosewood


Archimedean Solid Rhombicosidodecahedron table saw blade tilt angle settings:
12 Pentagons
20 Equilateral Triangles
30 Squares

Dihedral Angle 
159.09484°
Polygon Saw Blade Bevel Angles
Equilateral Triangle: 7.62263°
Square: 13.28252°

Dihedral Angle 
148.28252°
Polygon Saw Blade Bevel Angles
Pentagon: 18.43495°
Square: 13.28251°

Polygon Table Saw Sleds




Glue up Templates for Rhombicosidodecahedron
Cut and glue time: 3 Days




The next three Archimedean Solids were built using this printout for the blade tilt angles. You lay a piece of wood on the paper and scribe the blade tilt angles. Cut the piece of wood with a compound miter saw. Basically, sneak up on the scribe mark on the wood for the blade tilt angles.  


Small Rhombicuboctahedron


Material: Equilateral Triangles-Yellowheart, Squares-Bubinga


Archimedean Solid Small Rhombicuboctahedron table saw blade tilt angle settings:
18 Squares
8 Equilateral Triangles

Dihedral Angle 
144.73561°
Polygon Saw Blade Bevel Angles
Square: 22.5°
Equilateral Triangle: 12.76439°

Dihedral Angle 
135.00°
Polygon Saw Blade Bevel Angles
Square: 22.5°
Square: 22.5°

Small Rhombicuboctahedron Glue Up

Cut and glue time: 1 Day




Snub Cube



Material: Equilateral Triangles-Yellowheart, Squares-Bubinga

Archimedean Solid Snub Cube table saw blade tilt angle settings:
6 Squares
32 Equilateral Triangles

Dihedral Angle 
153.2345877°
Polygon Saw Blade Bevel Angles
Equilateral Triangle: 13.382706°
Equilateral Triangle: 13.382706°

Dihedral Angle 
142.98343007°
Polygon Saw Blade Bevel Angles
Square: 23.63386°
Equilateral Triangle: 13.382706°
Snub Cube Glue Up
Cut and glue time: 1 Day









Cuboctahedron


Material: Equilateral Triangles-Yellowheart, Squares-Bolivian Rosewood


Archimedean Solid Cuboctahedron table saw blade tilt angle settings:
6 Squares
8 Equilateral Triangles

Dihedral Angle 
109.471220635°
Polygon Saw Blade Bevel Angles
Equilateral Triangle: 19.47122°
Square: 35.26439°
Cuboctahedron Glue Up
Cut and glue time: 4 Hours





Only 9 more Archimedean Solids to build.