Parametric Fence Post Cap – Internal Fit (PETG)

A precision-designed parametric fence post cap engineered for reliable fit, durability, and clean finishing of structural posts.

This model is optimized for internal mounting and allows full control over critical dimensions, enabling adaptation to real-world manufacturing tolerances of metal or plastic posts.

 

⚙️ Technical Features
Fully parametric geometry (diameter, depth, wall thickness)
Configurable roof design: cone or pyramid
Optional screw fixation for mechanical locking
Optimized geometry for FDM printing without supports
Designed specifically for PETG outdoor performance
 

📐 Dimensional Logic

As shown in the technical drawing :

Post Diameter defines the internal fit
Cap Width controls overhang and water shedding
Insert Depth ensures mechanical stability
Wall Thickness affects strength and print reliability
Roof Height influences water runoff efficiency
 

⚠️ Fit & Tolerance (Critical)

This is where most users fail — and why this model is built parametrically.

 

Real-world posts are not dimensionally consistent.

 

Requirements:
Add clearance depending on material and printer accuracy
For external mounting:
Adjusted Diameter = Post Diameter + (2 × Wall Thickness)
 

Recommended workflow:
Print a low-height test ring
Verify fit on the actual post
Adjust parameter before final print

Skipping this step = high probability of misfit.

 

🧱 Print Profile (Validated)
Nozzle: 0.4 mm
Layer height: 0.2 mm
Walls: 4
Infill: 15% Gyroid
Material: PETG
 

🌧️ Functional Purpose
Prevents water ingress into hollow posts
Reduces corrosion and material degradation
Improves structural longevity
Provides a clean architectural finish

 

Boost MeIf this model meets your requirements and performs reliably in your application, consider supporting it with a Boost.
Your support allows further development of precision parametric models.