You can use the bottom piece to sandwitch a piece of particle filter to the grill to minimize dust in your pc or to act as an air purifier for your cat litter or something like that.
you can use the center piece combined with the outer piece to make a lot of grill design. just print those 2 pieces centered with the center piece being 0 top and bottom layer and chosing your infill of choice.
You can also use this as an intake fan to balance the temperature of you enclosure without pushing dust in or use as an exhaust with charcoal filter to absorb odor when printing.
I will add pictures of my make later since i havent finish my cat litter filter box yet.
The author marked this model as their own original creation.