Backyard Bird Feeder

Tensegrity Floating Tension Seed-Platform

An gravity-defying bird feeder constructed using tension cables to suspend the seed tray in mid-air. This project explores structural engineering principles with a minimalist aesthetic.

Tensegrity Floating Tension Seed-Platform

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Tensegrity Floating Tension Seed-Platform — step 1
Step 1

Begin by crafting two identical frames from weather-resistant cedar, ensuring precise mitered corners for strength. One frame serves as the anchor base, while the other functions as the floating platform holding the seed basin.

Tensegrity Floating Tension Seed-Platform — step 2
Step 2

Install stainless steel eye hooks at the four corners of both frames to serve as anchor points for the tension lines. Position the hooks so that the top and bottom frames are offset to create the required opposing pull for the tensegrity effect.

Tensegrity Floating Tension Seed-Platform — step 3
Step 3

Thread high-tensile wire rope through the eye hooks, connecting the top frame to the bottom at each corner to provide stability. Use a central vertical chain to pull the frames against the outer lines, creating the illusion that the top platform is suspended in space.

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Tensegrity Floating Tension Seed-Platform — step 4
Step 4

Apply a natural outdoor teak oil finish to protect the wood from humidity and ultraviolet radiation. Finally, mount a shallow galvanized steel dish in the center of the top frame to provide a stable feeding area for local birds.

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