Desktop fan / solder fume extractor / mini air filter for 120 mm fan

thingiverse

[Edit]Added portable solder fume extractor that uses an 18650 battery. I had to use a voltage booster as a single 18650 just doesn't spin the fan very fast. Boosted up to 8 volts and now the fan spins plenty fast. Voltage boosters like the MT3608 are pretty cheap on ebay. This requires printing with support. Also be careful when removing the support to make sure not to damage the grill part. Made a desktop fan for 120mm computer case fans. Two versions, an aperture grill version & a waves grill version. There's also one front plate that allows for a sheet of 1cm thick sheet of activated carbon sponge to use as a mini air filter or solder fume extractor by reversing the fan. Be aware that these grills may not be small enough to keep fingers out, especially the aperture grill. So use your own judgement if you have small children or pets around. Uses a 19 mm by 13 mm rocker switch and a 5.5 DC power jack. I used a Zalman Fanmate 2 in one of my makes (that hole in the back should work with a small enough 12v potentiometer), but it's optional if you have a quiet enough fan or use a lower voltage like 9v or 6v power supply. These were designed & made using Arctic Cooling 120mm quite fans. For printing, the only spot that may need support is the opening for the rocker switch. Printed in PLA at .28 with 20% infill.