easy dual 4010 parts fan ENDER 3/PRO
thingiverse
easy to print and install. adds a 2nd 4010 blower to the stock ender 3. mirror the duct in your slicer before printing. This mod helped me print PLA faster. Tried many other options before adding a 2nd blower but none helped much. you will have to wire the 2nd fan to your existing wires,if you don't have a 3rd party board.
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