3d printed 45mm fan grill

I replaced the fan on the Thing-o-Matic extruder because I had my fingers in it one to many fimes (when checking the filament) and there was only 1 fan blad and 10 fingers left.
But that thing is 45mm and no shop here has anything between 40mm and 50mm.

So I made a custom one.
It's parametric, so you can change the parameters fan_size and bolt_size for different sized fans.

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