In 1966, McCracken generated his signature sculptural form: the plank, a narrow, monochromatic, rectangular board format that leans at an angle against the wall (the site of painting) while simultaneously entering into the three-dimensional realm and physical space of the viewer. He conceived the plank idea in a period when artists across the stylistic spectrum were combining aspects of painting and sculpture in their work and many were experimenting with sleek, impersonal surfaces. As the artist noted, "I see the plank as existing between two worlds, the floor representing the physical world of standing objects, trees, cars, buildings, human bodies, ... and the wall representing the world of the imagination, illusionist painting space, [and human mental space." The sculptures consist of plywood forms coated with fiberglass and layers of polyester resin. While the polished resin surface recalls the aesthetic of 1960s southern California surfboard and Kustom Kar cultures, the title was drawn from advertising slogans in fashion magazines. In addition to the planks, the artist also creates wall pieces and free-standing sculptures in varying geometrical shapes and sizes, ranging from smaller forms on pedestals to large-scale, outdoor structures in the shape of pyramids, ziggurats, tetrahedrons and occasionally crystals. He worked in highly polished stainless steel and bronze and occasionally made work that in effect sliced the planks into thin, repeating elements that leaned against the wall in rows.