Rad-Ax Back-Pressure Prop (Inspired by the FanShowDown on Youtube

prusaprinters

<p>Rad-Ax, like 50% radial, 50% axial flow. Intake has the same area as the ‘doughnut’ around the motor. The thinking is that the air will be pulled in by the swept airfoil and ‘trapped’ under the overhang of the intake as it is flung out at a 45° angle.&nbsp;</p><p>Tested under low-flow, high-backpressure conditions, it showed +7% flow over the stock fan at 50dB, which was noticeably quieter than the stock 60dB.</p><p>Printed at 0.2mm with supports for the fan/prop blades.</p><p>You'll need to cut the blades off your stock fan's rotating hub and glue this one on, Gorilla Glue or similar. A close fit between the shroud and the blades is desirable, so some sanding may be required on the inside and on the blade tips.</p>