This customizable thing is a generator of simple tags you can hang from your pet's collar. It's suitable for two-color printing using Prusa ColorPrint or similar technique.
Please note:
You have to customize the size of tag and text to suit your needs.
You can enter height of base and height of extruted letters and borders in layers, not in milimeters. In case of color print, you want to think in layers. I recomment 2-3 layers for lettering (two are usually enough).
You don't have to publish the customized thing, as it will potentially reveal your phone number!