fan guard - 60mm

Very simple finger protector for a 6020 fan i have bouncing around my workspace.
Tight fit. Should be a perfect fit with no additional space. So if you push a or smaller width (like 6010) into it you may need to destroy the print to get the fan out again.
This item is particularly useful for high speed, high static pressure fans; where the first time you stick anything into the spinning blades will almost always be the last time.
As always; assumes a 0.4mm nozzle. Layer height is fairly irrelevant, but I used 0.3mm