Fence Post Cap — No Supports

Wooden fence posts rot from the top down. Rain sits on the end grain, works its way in slowly, and by the time you notice it's too late. This cap puts a stop to that — it seals the post top completely and stays fixed with 4 screws through 6 mm holes. No glue, no fuss, no wobble.

The design has a clever print trick: lay it on its 45° chamfered face. That flat sits perfectly on the build plate and gives the top surface a smooth, layer-line-free finish straight off the printer — no sanding, no post-processing.

✓ Fits square posts 50×50 mm to 150×150 mm
✓ No supports required
✓ Brim recommended for bed adhesion
✓ 4 screws, 6 mm holes
✓ PETG or ASA for long-term outdoor durability

Printed it? Show me!
Drop a photo in the comments — I love seeing these out in the wild. Tell me your post size and how it fits.

Different post size or shape?
The Fusion 360 F3D source file is included — remix it freely for round posts, bigger sizes, or your own twist. Upload your remix so others can find it too!

Every like, boost and print helps this model stay visible. Thanks for the support! 🙏