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If you are a N64 collector, modder, or simply like import games, you know that in order to play Japanese games on NTSC systems (or vice versa) require you to cut some of the plastic of your cartridge slot to play said games. I've done it before, I know. And I find it rather ugly. Besides, there is the probability that you might hurt yourself in the process. This is why I made this. Simply remove your existing cartridge slot and replace it with this one. It's that simple!
To download this 3D model, you can go to the thingiverse page: http://www.thingiverse.com/thing:513728