Prusa I3 Extruder Fan Bracket

thingiverse

My extruder heatsink became detached recently after I tried to tighten the 40 mm fan located beside it. Instead of buying a new heatsink and potentially experiencing the same issue again, I chose to create my own custom 40 mm fan brackets for my Prusa I3 (I have an Alunar version but anticipate this design will work with all Mk. 1 models). These brackets secure the fan in place by grasping both the fan and heatsink, pushing them together firmly. It requires some gentle wiggling to get a snug fit, but even novice printer users like myself can manage it easily. The bracket's "Grips" are designed to avoid the fan blades, so you don't have to worry about that. This simple yet effective design works flawlessly. If anyone would like to remix or share constructive feedback/appreciation, I'd be grateful for their input.