April 19, 2026
Description
“Madring” Keychain – Madrid Metro Style (Multicolor & Texture Versions)
Keychain inspired by the Madring logo, using the iconic horizontal diamond shape of the Madrid Metro sign.
This design includes two different versions optimized for 3D printing:
Multicolor version (AMS or filament swap): designed for direct printing with separated color areas.
Textured surface version: optimized for single-color printing, using first-layer color changes on the build plate to achieve a clean and detailed finish.
Features:
Compact and durable design
Integrated keyring hole
Geometry optimized for support-free printing
Ideal for keychains, merchandising, or gifts
Recommendations:
Layer height: 0.2 mm (or lower for better detail)
Well-calibrated first layer to enhance surface texture
PLA recommended for best visual results
License:
Creative Commons — Attribution — NoDerivatives
JG3D
