Slug Collar / Slug Barrier / Schneckenkragen

Hello everybody,

After some problems with Slugs in the garden i have searched in the web for some no Toxic solutions. I Have found the Slug Collar / Slug Barrier / Schneckenkragen.

After searching for the Slug Collar / Slug Barrier / Schneckenkragen on Thingiverse... no result. ;-(

Here the Slug Collar / Slug Barrier / Schneckenkragen from me.

If you have a problem or an improvement for this thing please let me now it.

hey i have a problem with the license.
my things shot be free for everybody but which license is the right one?