Left Ender 3 50mm Fan

thingiverse

I experimented with various dual fan configurations, but I was never thoroughly satisfied. Most of them seemed too flimsy or had printed parts uncomfortably close to the hot areas. As a result, I returned to the stock hotend cooler and discovered a modification for the right fan, but still needed one for the left fan. I devised a solution where the left fan is secured to the side of the stock cooling shield without any screws. On that side, there are three long holes in the shield which I utilized to snap my fan holder into place. The sole screw and nut required hold the fan in place on the fan holder. It's a bit challenging to snap it into position but it will fit. UPDATE - I encountered an issue where pushing the holder too far would prevent the x-axes from reaching the stopper switch. To resolve this, I added an extra arm to secure the fan holder in place. You may want to include supports under this part. The fan I'm using on the right side is this one: https://www.thingiverse.com/thing:2884992