Parametric Joint Grid for Clinker Brick Masonry

Parametric Joint Grid for Clinker Brick Masonry

I ran into a problem when fitting a prefabricated insect screen into the mortar joints of my clinker-brick house: every “standard” grille was either too tight or left gaps that let wasps and mice through. To fix this once and for all, I created a simple OpenSCAD generator that turns your exact joint measurements into a perfect 3D-printed joint grille.

How it solves the problem:

Custom dimensions: 

Enter your mortar-joint width, height, and depth—no more guessing or sanding.

Perforated grid: 

Blocks insects, wasps, and small animals (like mice) while allowing airflow.

Optional lamellae: 

Add inclined vanes to direct ventilation as needed.

3D-print ready: 

Export an STL that snaps into place as a reliable butt joint ventilator.

Summary

If you’ve struggled with gaps or ill-fitting screens in your clinker brick masonry, this script adapts to your exact measurements, giving you a snug, problem-solving grille every time.