Atari 2600 Universal Game Case Cartridge Adapter

I decided I wanted to store my Atari 2600 Cartridges in the Universal Game Cases (UGCs) that are readily available online. Unfortunately, the cases don't fit these cartridges well, so I designed this adapter to hold them in place. Ii is designed to fit snugly around the existing cartridge tabs inside the case, however I did find that different colors of filament shrank more than others so you may need to tweak the model if you find it is too loose or too tight to fit your cases & cartridges. I a