Happy June! Watercolor Wildflowers Monthly Newsletter featuring brand new geometric art. The Icosahedron.
This month’s winner of a Planetary Nightlight is Nita Upchurch of redefinedhome.com in Des Moines, IA. Subscribe to this newsletter for a chance to win! ENTER Drawing by -> SUBSCRIBE
Customer Newsletter June 2025
Icosahedron Art in Clear Resin
I see new resin art ideas wherever I look! From nature to man-made structures, there are fascinating ideas in art just waiting to try. This month it’s the Icosahedron. A clear or colored, three-dimensional tetrahedron, formed with 20 equilateral triangles. It has a penta-gonal pyramid on “top”, and same on the “bottom”. with a band of five up and five down alternating triangles holding the top to the bottom. As you turn it over in your hands, it’s hard to tell where the top is. Each side is the same! Roll it over and there’s another pentagon. You could also call it a geodesic sphere or a polyhedron.
My first attempt was with cardboard. I wanted to get the assembly correct and its hard to tell where to start. Can a flat paper be cut and folded into a 20 sided geodesic ball? The answer is yes but a stiffer material is needed.
I cut 3″ triangles from a sheet of 1/8″ plastic acrylic. How to fit, how to join these triangles together? What angle should they be to each other. The angle between each side should be 138°. This is called the dihedral angle. It is figured with college level math that I don’t remember any longer. Making 3″ clear or colored resin triangles in exact 60° angles and consistent dimensions is the next challenge. Precision is key to a good fit. I bought some laser-cut acrylic triangles in the end to keep everything tight and attractive. I used these to create a mold so I can cast the triangle in any color using liquid two-part epoxy resin.
There’s the awkward fit with square edges so the mold includes 21° +/- angle on the inside faces. Each chip touches three times with a 138° interior angle. An interlocking design would help. The result is what you see here:
These unique pieces of art make a perfect gift for Father’s Day – for the man who has everything – except an Icosahedron.
Basic models are only $45. If you want an LED light then add $15. Made-to-order or buy online from watercolorwildflowers.com/store/
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