I needed some fan guards for my arcade machine and for a neat little entertainment centre hack.
Playing around I made a fish-eye honey-comb screen that looked pretty good. The pattern has larger holes near the centre of the fan and smaller holes where it counts.
How to make your own (with plans):
Making this is pretty easy if you have a laser cutter. If you don’t grab the .dxf file and head of to your local laser/acrylic cutting business or makerspace.
Q: I’m too lazy, can you sell me one?
Not any more (sorry).