My fan bracket cover got bent a while back. I had been using rubber bands to hold it in place, but with heating, they would not last. So, having seen several threads of fan covers not staying in place or magnets losing their oomph or whatever, I decided to make this. As you can see, it is on my UM3E and holds quite nicely. The two variations are just one is a slight bit thinner in the back and not as blocky there. The front is blocky to increase the strength of those tiny clasps.
Print it out in filament that can have a bit of flex and take a bit of heat. I will probably have to print in another material when I return to high heat materials such as PC.