Backyard Bird Feeder

Inverted Tetrahedron Prism Seed Geometric Feeder

A striking, minimalist bird feeder featuring a floating inverted triangular prism design that utilizes gravity to distribute seeds evenly.

Inverted Tetrahedron Prism Seed Geometric Feeder

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Inverted Tetrahedron Prism Seed Geometric Feeder — step 1
Step 1

Begin by constructing the main cedar frame using compound miter cuts to form the inverted tetrahedron shape. Ensure all angles align perfectly to create a seamless, water-resistant basin for the birdseed.

Inverted Tetrahedron Prism Seed Geometric Feeder — step 2
Step 2

Install clear, marine-grade acrylic panels on the inner faces of the prism to allow for visibility while protecting the seed from moisture. Use a silicone sealant along the interior seams to prevent any gaps or leaks during rainy weather.

Inverted Tetrahedron Prism Seed Geometric Feeder — step 3
Step 3

Create a gravity-fed dispensing slot at the lowest point of the tetrahedron that leads to a wide, perimeter-mounted landing tray. This balanced design ensures that as birds feed, gravity naturally pulls more seed into the tray area.

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Inverted Tetrahedron Prism Seed Geometric Feeder — step 4
Step 4

Apply a weather-resistant exterior oil finish to the wooden structure and mount it using a single high-tensile steel rod for a sleek, floating aesthetic. The result is a modern geometric piece that blends architectural precision with functional bird feeding.

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