breathable kombucha preserving jar lid for Fido and many others

Four years ago I started brewing kombucha but wasn't happy with just a towel on the top.
Once a fly managed to get in the jar, so I decided to print a better solution .
Since four years the print is still in use and had never ever problems anymore :) 

as a filter, you can use a makeup pad or any other breathable material.
It gets screwed into the lid.

I use it with and Fido 3l preserving jar, but I'm sure it will fit also many others.
You can easily see the size in one of my pictures (95mm) , or simply measure the 3D model 

I could print with the mesh facing the build plate, without support, but do it as you feel more comfortable ( position should be right for the file) 

happy printing , happy brewing and a make would make me happy ;)