Those extensions are compatible with the following paddles :
- Smart Frotwo (451)
- Smart Fortwo (453)
WARNING : don't mix with Roadster 452 or Fortwo 450, which have a different paddle shape.
A specific design is available for those : https://www.thingiverse.com/thing:3073223
The assembly is a tight fit. No glue is needed.
EDIT : shape is now final. Enjoy !
To be printed in PETG or ABS because of the possible exposure to high temperature and stress.