Cooling Fan: Toroidal vs Normal

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The fan I used:

Printed with this printer:
This is my favorite 3D printer:
My design software:

My fan design:

Toroidal propeller on a $25 cooling fan? I am testing the differences to see if this is a feasible idea!

Check out my CNC machine:
Indystry:
Patreon:

Instagram: nikodembartnik