140mm Fan to 100mm Duct Adapter
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Adapter connecting a 140mm fan to 100mm duct. No supports, prints flat. For fume extraction & ventilation.
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140mm Fan to 100mm Duct Adapter
A simple, no-supports adapter that connects a standard 140mm fan to 100mm (4") ducting. Great for fume extraction, workshop ventilation, and general airflow projects.
🔧 What it's for
Soldering / 3D printing fume extraction
Workshop and garage ventilation
Connecting a 140mm fan to flexible aluminium or PVC duct
General airflow and cooling setups
📐 Specifications
Fan side: 140 × 140 mm flange with standard mounting holes
Duct side: 100 mm outlet
Height: ~49 mm
Smooth internal transition for minimal airflow loss
🖨 Recommended print settings
Material: PLA or PETG (PETG if exposed to heat or sunlight)
Layer height: 0.2 mm
Walls: 3 perimeters
Infill: 15–20%
Supports: None — prints flat on the flange
Orientation: 140mm flange flat on the build plate
🔩 Assembly
Mount the fan to the 140mm flange with standard fan screws, then slide your 100mm duct over the outlet and secure with a hose clamp or tape.
💬 Notes
Need a different fan or duct size? Drop a comment — happy to remix. If this was useful, a like or boost is hugely appreciated and helps me keep designing! 🙌