Rostock Nano Basic Cooler

This is a Rostock Nano's 30mm fan Cooler.
Rostock Nano : https://www.thingiverse.com/thing:2764097

If you will make the Rostock Nano, I recommend use this model.
The cooling capacity is the same, but it's easy to print, so it's easy to remix.
I will change to this model in the future.

Fixed fan :M3x20mm x2
Fixed plathome M3×10mm ×1 With Nut