I got tired of overly complicated fan mounting solutions. This Fan clip has no muss, no fuss. It is meant to take M3 screws to secure the fan in place.

There are two versions of the fan clip, one for M3 heated inserts and the other is meant to screw directly to the plastic.

You can print this in either with the orientation it will mount or you can also mounting hole surface face the print bed. Dealers choice.

I suggest printing with more than 2 walls and using at least PETG. Do NOT use PLA as it will warp over time from the heat radiating from the heating block.