Outdoor venting cover for 110 mm PVC pipe
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Down-facing vent cover that fits inside a 110 mm PVC pipe. Done in cadquery, with a bit of Blender.
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- Printables
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- Other House Equipment
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- Creative Commons — Attribution — Noncommercial
110 mm PVC pipe is a convenient venting pipe for extractor fans. We have strong winds, and hence, rain water can be driven into a horizontal pipe. The vent cover is used with an EF-1009 inline fan which has a back-draught shutter, somewhat blocking the wind.
This vent cover is a down-facing elbow made in parts for assembly. The design was made in cadquery, with some work in Blender.
The vent mounts entirely inside the pipe, no external mounting holes, brackets or cover sheeting required. Once assembled (four parts glued together) just glue or silicon the entire assembly into the pipe to prevent movement.
You can print this in any material, but protect from UV by priming and painting.
The elbow part is provided with fins to prevent birds from nesting or other large creatures to enter. Inside the pipe component a fine mesh can be glued into prevent insects entering.
The elbow is calculated in cadquery as a solid, but needs hollowing out and then holes must be cut to open the hollow solid. This is done in Blender. Once hollowed and cut, the fin assembly is added in Blender and the STL exported. Full instructions are given in the cadquery script.