BIQU BX 35mm to 40mm Fan Adapter

upgrade from a 35mm to 40mm fan on the BIQU BX for better cooling on the hot end heatsink. if you are going to print this, check that your 24v 40mm fan has the same hole spacing. If it doesn't, just edit the attached SCAD. below are the fan parameters for easy review.

Here is the fan i used: https://www.amazon.com/gp/product/B07RJGXHPY/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

if you choose to buy this fan, you will need to splice the new fan with the original 35mm fan's JST connector. the connector on the new fan is too large.

Also used:
4x M3x16mm screws
2x M3 nuts

fan 1 = 35mm fan that came with the BIQU BX
fan 2 = new 40mm fan

// fan 1: diameter
d_fan1 = 35;
// fan 1: distance between screw openings
ls_fan1 = 29;
// fan 1: screw openings' diameter
ds_fan1 = 4;

// fan 2: diameter
d_fan2 = 40;
// fan 2: distance between screw openings
ls_fan2 = 32;
// fan 2: screw opening diameters
ds_fan2 = 3.5;