For Portland Parks & Recreation’s Willamette Park Redevelopment Project, landscape architects Mayer/Reed designed four entry markers made of metal gabions filled with rocks and fronted by artist-etched faceplates. Each gabion is topped by a 4.5”-thick clear and blue glass capstone handcrafted by the fabricators at Bullseye Studio. During the day, this glass top casts gorgeous color onto the river stones held in the gabion, and its bubbles and striations sparkle within.
After the construction company Steel + Timber won the bid for building the gabions, Bullseye Studio began fabricating the 210lb capstones by purposefully selecting a glass form known as cullet in order to create both large, dramatic bubbles and flowing veils of tiny bubbles. Irregularly-shaped segments of blue sheet glasses were laid among the cullet in such a way as to suggest rushing and flowing waters. The capstones were fused upside down so that the large air bubbles would be trapped in between the glasses, and then rise up through the blue for a more dynamic effect.
Each 24” x 24” capstone has a sizable top bevel, and was polished on all sides using a combination of CNC machinery and hand finishing. The precision afforded by the machinery allowed Bullseye Studio to create an angled facet on the front of the capstones in order to accommodate the upper portion of the metal faceplate.