Contact

Photosynthesis Whirligig Photograph: Bruce Tom

Public art / 17

Elemental Whirligigs

Western Iron Works developed the mechanical design, engineered the moving assemblies and fabricated both sculptures from Christine Bourdette’s artistic concept.

Hazel Wolf K–8 STEM School · Seattle, Washington
Artistic concept: Christine Bourdette Mechanical design, engineering & fabrication: Western Iron Works
The project
Artistic concept
Christine Bourdette
Mechanical design, engineering & fabrication
Western Iron Works
Location
Hazel Wolf K–8 STEM School Seattle, Washington
Completed
2019

The artist’s idea

Carbon atoms
and photosynthesis

Christine Bourdette’s artistic concept draws on wind, plant forms and the building blocks of life, reflecting the school’s environmental science focus.

One takes its form from a carbon atom. The other represents photosynthesis. Both use moving elements to connect the artwork with the school’s focus on science and alternative energy.

Read Christine Bourdette’s full artist statement

Elemental Whirligigs acknowledges the school’s environmental science focus as well as its dependence on alternative forms of energy generation. The starting point for these two sculptures was to consider how the artworks could utilize the wind and inspiration came from plant forms, growth processes, and from some of the most basic chemical elements found on Earth. These basic elements of life and growth evolved into designs for two sculptures with wind-driven elements: one based on the carbon atom; the other based on the process of photosynthesis.

The atomic structure of carbon atoms inspired the Carbon Atom Whirligig design. Carbon is one of the six most common elements in the known universe and is the element on which all life is based. Four stationary hoops represent electron orbits, with the blue spheres as the electrons. In between each stationary hoop is a rotating “nucleus orbit,” with the small purple and orange discs representing the protons and neutrons in the atoms’ nuclei. The blue hemispheres on the rotating hoops represent additional electrons, and power the rotation of the “nucleus orbits” –at least when the wind kicks up.

Photosynthesis Whirligig represents the essential process of photosynthesis. It includes symbolic icons for the sun, photons (sunlight), oxygen, and carbon dioxide molecules, with green leaf-like forms containing the symbols for CO2 molecules that plants capture from the atmosphere. Some of these design elements move: the “Sun spinner” at the top spins wiggles back and forth; the “Photon twirler” with its yellow discs and cups rotates; the “Oxygen wind vane” functions as a weather vane, indicating wind direction; and the six “CO2 spinners” spin, propeller-like, inside the leaves of the plant form.

Christine Bourdette · Elemental Whirligigs
Looking up through the Carbon Atom Whirligig’s rings and rotating assemblies.

Our work

Engineering
the motion

Starting from Christine Bourdette’s concept drawing, we developed the complete mechanical design and engineered how every moving element would work. We machined the bearing components and fabricated every part of both sculptures.

Designed to be serviced

We built internal grease passages and zerk fittings into every moving assembly so the mechanisms can be lubricated and maintained. Those details were designed in from the start, with decades of service as the goal.

  • 01Complete mechanical design and engineering
  • 02All fabrication and bearing-component machining
  • 03Serviceable moving assemblies with grease fittings

Elemental Whirligigs / 01

Carbon Atom Whirligig

Four stationary hoops and blue spheres represent electron orbits and electrons. Between them, rotating assemblies carry small purple and orange discs representing protons and neutrons.

The blue cups catch the wind and turn the rotating hoops.

Materials
Stainless steel, fluoropolymer paint
Dimensions
16.5 × 4.75 × 4.75 ft.
Carbon Atom Whirligig in motion · Video: Christine Bourdette
Carbon Atom Whirligig: stationary electron orbits surround wind-driven rotating assemblies. · Photograph: Bruce Tom
Photosynthesis Whirligig, showing the leaf forms and upper wind-driven elements.

Elemental Whirligigs / 02

Photosynthesis Whirligig

Bourdette’s design uses symbols for the sun, sunlight, oxygen and carbon dioxide. Green leaf forms surround six small CO₂ spinners, reflecting the carbon dioxide plants take from the atmosphere.

  • Sun spinner: turns and rocks at the top.
  • Photon twirler: yellow discs and cups rotate.
  • Oxygen wind vane: indicates wind direction.
  • Six CO₂ spinners: turn like propellers inside the leaves.
Materials
Stainless steel, red acrylic discs, fluoropolymer paint
Dimensions
16.5 × 3.5 × 3.5 ft.
Photosynthesis Whirligig in motion · Video: Christine Bourdette
Carbon Atom Whirligig beside the courtyard stairs.

Seattle, Washington

Hazel Wolf
K–8 STEM School

The two 16½-foot-tall whirligigs stand within the school grounds, where the wind sets their smaller elements in motion.

A Washington State Arts Commission project in partnership with Seattle Public Schools.

Next project

Queen Swans of Cary

Next project
CONTACT WESTERN IRON WORKS

Tell us about
your project.

Send a drawing, a sketch or a few photos. We’ll talk through the details with you.

Get in touch503-530-8969