92 mm honeycomb fan guard
thingiverse
Simple honeycomb fan guard with a very open design, minimally restrictive to the air flow. It is designed for 92 mm fans. The overall thickness is 4 mm, but the honeycomb is just 2 mm thick, allowing a gap to the blades of at least 2 mm. It is not a strong guard, but should work just fine for avoiding fingers and wires from getting caught in the blades. I printed in green ABS with 0.2 mm layer height. The holes might be too small for a self-tapping fan screw, but it can be easily widened with a drill or hobby knife if needed. Designed using Fusion 360.
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