Brewtools Fermenter Sightglass Cover/Light Guard

thingiverse

I have a sightglass on the bottom of my Brewtools F80 fermenter which is great for dumping trub/yeast but does mean wort/beer is permanently subjected to sunlight from outside as I have my fermenter fairly near a glass door. To avoid any 'light strike' I decided to design and print a rotating light guard. There's a fixed piece which locks in to the back of the sightglass to stop it from spinning whilst blocking light to three of the four glass viewing holes, and then a second piece which freely spins around on top of the first meaning I can block all light getting in, or spin it around to reveal the front 'window' to see what's happening .