Ender 3 Pro y-axis stepper motor fan 40mm mount

thingiverse

This is a custom design based on the original 60mm fan mount by etchensketch. I had an extra 40mm fan sitting around and wanted a similar slim bracket like the 60mm version. To achieve this, I remixed the design to support a 40mm fan and extended its height so it is farther away from the stepper motor. For this project, I used the 40mm fan (available on Amazon at https://www.amazon.com/gp/product/B009NQLT0M/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&), which features a cable insert to lower its speed from 4500 to 3700 RPM, significantly reducing noise while still providing sufficient cooling for the y-axis stepper motor. You will need several M3x8 screws to attach this bracket to the stepper motor and four M3x16 screws to mount the motor to the bracket.