Empty keychain card
thingiverse
Create a design using Blender or another software that combines both versions: 0.75mm and 0.5mm height lines.
Download Model from thingiverse
With this file you will be able to print Empty keychain card with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Empty keychain card.