32oz Ball Mason Jar Sunlight Shield

I just tried my hand at making some fermented hot sauces in a mason jar with an air lock.  I don't have a good enclosed space for them, so they will live on my counter.  I quickly made these covers for the jars to keep UV light off them during the fermenting process.  

These are a snug fit on a Ball brand 64oz mason jar.  Might fit other jars, but can't say for certain.  Inner clearance is 92mm across and 107mm diagonally. 

Designed to be printed in Vase mode for a fast inexpensive print.