The keychain is ideal for car enthusiast and also for GTD owners (or GTD fans). It is really easy to print the model, the only thing you have to do is to change filament at layer 5.2 mm. This thing you can do it in your slicer. The base is from thingiverse: https://www.thingiverse.com/thing:2845879 And I have changed the letters. Material: PLA Support: no Infill: 80% for the letters because I like to sand it (it gives a nice look)