Five villager raid farm

The Tankcat raid farm, and the fastest one here that a single player can run. Five villagers on fletching table pods have their jobs taken and given back to stack raid after raid, the raiders drop through nether portals into a killing chamber, and an ominous bottle sorter feeds the farm its own fuel back, so it runs itself once seeded. Nearly 1000 glass and an hour and seven minutes of tutorial, which the creator says is the longest he has ever made, and builders report ten to fifteen hours of work. Java. The storage fills in about half an hour, so plan an item sorter as part of it rather than an extra.

Every note block has to be on note 0. That is the top comment on the whole video and the most common reason the raid bar appears and then vanishes.
Box the villagers in before you walk away. Drowned will turn them into zombie villagers while you are still building.
Use at least a diamond sword with Sharpness V and Sweeping Edge III so evokers die in one hit, or you get vexes. A strength 2 beacon fixes it if the sword alone does not, and never put fire aspect on it because that breaks the armor stand.
You do not need a stack of each ominous bottle to seed the sorter. One of each level is enough and the farm fills the rest itself.
Check that every villager pod matches: same pistons, same fletching tables, observers facing the right way, and no nitwits among the villagers.
If the piston the mobs fall through looks broken after you rejoin or the chunks unload, flip the lever off and back on.