4010 Fan Blades
thingiverse
https://www.printables.com/model/122180-4010-fan-blades Remixed Version of this fan. It is suitable for ender3 hotend 4010 fan. I tried many versions such as 3,5,7,9,11,13 bladed ones and 13 blades version is the most slient one. You need to trim original blades and sand the drum to make this blades tight fit to the drum. Print it inverted so supports will touch low pressure zone.
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