40mm Snap-on Fan Cover

40mm Snap-on Fan Cover

thingiverse

This design is specifically tailored for the main hot end fan of the Wanhao i3 Plus, particularly those using the Balco 3D printer, and takes advantage of the bottom two holes to accommodate the top two holes. After suffering a painful finger injury from the spinning fan on my Wanhao i3 Plus variant, I realized that adding a small fan guard was an excellent idea. I discovered and printed the one I preferred ([Diymik's 40mm fan cover](https://www.thingiverse.com/thing:2219530) but lacked sufficient bolts to secure it properly. Instead of waiting for more bolts to arrive, I decided to create a quick remix that turned into a much longer process than anticipated. The needed bolts arrived in the meantime while I was working on the design, allowing me to make adjustments as necessary. For this project, I copied the dimensions from [TinmanTechnology's Snap-On Fan Guards](https://www.thingiverse.com/thing:401935) and incorporated them into Diymik's cover (a huge thank you to Diymik for sharing the CAD file). With the original screw holes no longer needed, I continued the hexagon pattern into the corners and added some extra holes at the top edges in case airflow was impeded. This also gave me an excuse to add more details. After a few tweaks, I achieved a firm fit that can be easily removed when necessary. I've included the .step file as usual, but feel free to ask if you need anything else.

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