25mm Axial to 50mm Blower Adapter
thingiverse
Credit for original blower fan adapter belongs to AJsRaceway at https://www.thingiverse.com/thing:2719213. My Wanhao Duplicator i3 v2.1 came equipped with a 25mm fan for the nozzle instead of a 40mm fan, so I remixed AJsRaceway's design in Tinkercad to attach it to the 25mm mount on my printer. After printing this and installing the 50mm x 50mm x 15mm blower fan, my prints improved significantly, particularly on overhangs. To use this effectively, remember to turn the fan mount at an angle as described in the Duplicator i3 wiki (https://3dprinterwiki.info/duplicatori3/cooling-mods/). This ensures equal air distribution across the nozzle. With the stock direction, 80% of the air goes to the right side and only 20% to the left. Here's the Tinkercad link: https://www.tinkercad.com/things/5LALNmzSz3t Enjoy!
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