
Minecraft: How To Make An XP Farm With A Spider Spawner …
To begin, dig out a 9x9 area around the spawner. While creating this room, make sure to light up the area with torches so no spiders spawn while you're working. Place torches on each side of the spawner, as well as along each wall. Dig 3 blocks below the spawner and 2 blocks above. Overall, the room should be 9x9x6.