I really needed this mod, I moved it to the new version (2.1) if the author updates it, I will delete it.
https://mods.factorio.com/mod/Dequalitier
Dequalitier is a chest that downgrades high quality items to its own quality. How to use: craft dequalitier of, say, rare quality. If you put a legendary item into it, it will convert it to rare item. Putting an item with lower than rare quality won't affect it at all. Also works with modded quality levels.
Mods introducing new content into the game.
I really needed this mod, I moved it to the new version (2.1) if the author updates it, I will delete it.
https://mods.factorio.com/mod/Dequalitier