blower fan

thingiverse

uses a common small DC motor and 6 m2 screws (best if there between 6mm and 10mm long.) the housing is 72mm by 63mm in size. the spacer is meant to go on the motor shaft before the blades to stop it from hitting the housing. it works best at 3 volts because there is minimum whine with a good air flow. can go up to 5 volts but doesn't increase air flow and makes it a bit louder. pretty easy to print. the blades don't need support but the housing does.