180mm fan duct adapter to 4" or 100mm pvc ventilation tube
thingiverse
I created this adaptation to fit a 180mm computer fan onto a 100mm PVC pipe, enhancing airflow in my printer shed. Update: September 1st, 2017. The piece turned out quite rigid and I printed it using clear PLA for easier analysis of the structure's design and functionality. Please note that the internal diameter is indeed 100mm; measure your pipe carefully before assembly to ensure a proper fit. If you need a larger hole, please leave a comment and I'll be happy to assist. If you attempt to print this adaptation but find it won't fit, try submerging the end in boiling water for a few minutes to soften the PLA. While still pliable, gently work it around the tube until it conforms to its shape. This design can also be used with flexible duct hose for added versatility.
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