i3 Mega FAN Covers for Noctua 40x40 fans

thingiverse

After finding some nice 40x40 fans from Noctua, for hotend cooling and stepper cooling, I tried to find fitting covers. The ones I found were mostly producing a lot of extra noise. As the fans themselves are *verrrry* quiet, I thought that would be a pitty. So fired-up CAD and designed some that fit the airflow-philosophy of Noctua. I left the original metal cover in place, just made some big holes in there to have optimum airflow. Now there is hardly any difference with or without the cover (y) For the stepper coolers there are also many solutions to be found here. But with either a weird flow-funnel or just hanging "in the air"... ;) This one is easy mountable, has good airflow and fits two Noctua 40x40 fans. That might be sufficient ;) I measured a 12dB drop in noise while printing... Have fun trying them out ! Oh... and don't forgrt to turn the bottom plate of your i3 Mega case 180 degrees !