Geocache around a post
cults3d
I tried to make a geocache which looks like the top of a post in Nantes (the 3rd photo shows the post without the cache). I do not know if you can reuse it anywhere, but I provide the freecad project if you want to adapt or improve it.
Download Model from cults3d
With this file you will be able to print Geocache around a post 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 Geocache around a post.