40mm Snap-on Fan Cover

cults3d

This is specifically to fit the main hot end fan (not the parts fan) on the Wanhao i3 Plus (in particular the Balco 3D printer). The fan is only bolted on using the bottom two holes of the fan so this configuration works for the top two holes being available. After jamming my finger in the spinning fan of my Wanhao i3 Plus variant I decided a small fan guard is probably a good idea. I found and printed the one I liked (Diymik's 40mm fan cover (https://www.thingiverse.com/thing:2219530) but I didn't have enough of the correct bolts to actually mount it. So instead of just waiting I decided to do a quick remix (which ended up being a much longer process than I envisioned, so much so that the needed bolts arrived in the meantime) to make it so that hardware would not be required. For this I copied the dimensions the pegs on TinmanTechnology's Snap-On Fan Guards (https://www.thingiverse.com/thing:401935) and put them onto the Diymik's cover (if you read this Diymik, thank you so much for including the CAD file). With the original screw holes no longer needed I tried my best to continue the hexagon pattern (I'm a sucker for hexagons) into the corners and cut out some extra holes in the top two edges in case of the very unlikely event that there is was any impediment to airflow on the original (plus just gave me an excuse to add something more. After a bit of tweaking I managed to get this to work quite nicely. It is quite a firm fit but snapped in no problem and can still be removed easily. I've included the .step file as normal but let me know if anyone wants anything else.