Icosidodecahedron Fish Tank

Archimedean Solid Icosidodecahedron

Faces

12 Pentagons 

20 Equilateral Triangles

Edge Length 2.75"

1/2" Polycarbonate material

Dihedral Angle

142.62263°

Polygon Saw Blade Bevel Angles

Equilateral Triangle: 10.8123169°

Pentagon: 26.56505°

Set the table saw blade tilt to 26.57° for the pentagon faces.

Rip the 1/2" polycarbonate to 5" in width with the edge bevel.

Cut the material into 5" pieces. Then use the Pentagon table saw sled to bevel one edge. The previous bevel is against the stop with the edge bevel facing up. Set a width, a stop, and a toggle clamp to cut all 12 pieces to the same width. 

Then lay out one edge at 2.75" and place a stop with a toggle clamp to cut all of the pieces at the same width.

Rotate the pieces and cut all of the edges. 

Cutting the  20 Equilateral Triangles. 

Set the table saw blade tilt to 10.81° for the Equilateral Triangles. 

Rip the material to about 3" with the edge bevels being parallel.

Lay out two triangles and cut the material to form a rhombus. 

Lay out one edge of the material at 2.75" and set a width stop with the toggle clamp. 

Cut the triangles. 

Glue up 

Tape up a top and bottom. They will be identical. 

Tape the two pieces together. 

Cut the tape at the top pentagon face and remove it. Then glue the pieces together on the inside of the Icosidodecahedron.