Fermatation-waterlock-cap

This is a cover with a water-lock to be used on a weckfles. You can use it for fermentation of vegetable or making wine.
The cover is to replace the glass cover. Add some water an use a small glass, a cover from a spray-can or use a pill box to capture the gas.
This cover is for a 90mm jar-hole

file is updated to no.:5

https://www.youtube.com/watch?v=snxb_PSe3Ps