So when I tried JoeyAW's cartridge cover it did not fit. The extrusion was just a little to thick. So I had to modify it a bit to work.
Basically if you need a dust cover for your n64 carts, try JoeyAW's model first and then if it doesn't fit, try mine.
I included the fusion 360 file.
N64_cover-mod.stl | 24.5KB | |
N64_cover-_mod_1_v1.f3d | 78.0KB |