120mm fan holder for 30x30 aluminum extrusion
thingiverse
This was designed to hold a 120mm fan on a Hypercube evolution. I believe it will even allow you to eliminate the hotend heatsink fan if you apply a bed sticker and print only in PLA. There are two versions: one for use with self-tapping screws that come with coolers, featuring through holes.stl, and another for long M4 bolts and nuts. It can also be CNC-milled.
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