insect stop for cavity wall

thingiverse

We live in a brick house with double walls insulated for maximum soundproofing, featuring strategically placed holes that allow moisture to escape while keeping insects out. However, this setup has its downsides: wasps can still find their way inside and build nests, causing me significant problems. These insect filters are available for purchase under the name "bijenbekjes" in Holland, but I require over 100 units, which is a costly endeavor. To address this issue, I designed an innovative filter system that prevents insects from entering while maintaining free airflow. The design consists of two parts, printed separately to optimize the print orientation and minimize waste: the clamp requires layers to bend in a specific direction to achieve its intended shape, and using old filament with various colors is feasible since the clamp won't be visible. The two pieces are bonded together using hot glue. Although the preview in the SCAD file appears distorted, the actual design looks good once downloaded, as evidenced by the attached screenshot. The variable names and comments remain in Dutch for now, but all parameters are configurable; I may translate them if time permits. The dimensions of this insect filter are 54 mm long, 20 mm wide, and 32 mm high. In OpenSCAD, use "l" to represent length, which is calculated based on the width of the openings. The width is denoted by "breedte," while "hoogte" corresponds to height. To ensure a proper fit, use a 4mm drill to widen the two holes in the clamp.