Quad crossroads wither skeleton farm

Elyrio3's quad wither skeleton farm, a showcase rather than a tutorial. It sits on a nether fortress that has four crossroads next to each other, uses a 20 blocks per second mob conveyor to move the skeletons, and drops them onto honey blocks and a piglin chute so the timing lines up with your attacks. Everything happens in the nether, no portals and no second dimension. The rate is 34 skulls a minute, which is several times what a normal fortress farm gives, and the price is the fortress you have to find and an auto clicker attacking on a fixed interval. There is no build tutorial, so the schematic is the instructions.

Finding a fortress with four crossroads side by side is the real work. The CrossroadFinder tool linked in the description is how people do it, and colton.reynolds points out you have to grab the exe from the Releases tab on that page.
Elyrio3 says you can adapt the build to three crossroads if that is all your fortress has.
Attack every 14 game ticks. You can go slower, but not faster, the player detection cannot keep up.
The piglins in the build are named on purpose so they do not count against the mob cap.
Taserface__ notes the top layer sits 3 blocks above the crossroad height, so standing in the middle of a crossroad at y68 puts the grass of the top layer at y71.
Taserface__ also found a stray zombified piglin in the schematic at the start of the bottom left conveyor. It is not in the world download and looks like an accident.