Daylight-Shutter Iron Farm in Minecraft

Use zero-based (x, y, z) coordinates with north at z=0. Put south-facing hoppers at y=0, x=4..8, z=9. At z=10, point x=4..7 east and x=8 south into the chest at (8, 0, 11). Build the glass balcony at x=7..9, z=12..13, y=0 and y=3.

💡 Place the bottom of this model at least 16 blocks above the highest nearby terrain. Keep unrelated villagers, beds, golem farms and surviving golems at least 32 blocks from the chamber as a conservative separation margin. Remove temporary access blocks inside the chamber’s horizontal eight-block spawn radius; lighting alone does not prevent golem spawning.

Build the glass shaft walls shown at x=3 and x=9, z=9..10, and the south wall at z=11, from y=1 through y=9. Close its north face at z=8 only from y=1 through y=5.

💡 The 5x2 opening at x=4..8, z=9..10 remains clear. The north wall ends below the spawning floor so golems can drop into the shaft. Glass above the chest permits opening it from the south balcony; the balcony ceiling leaves room for a player but not a golem.

At y=2, attach five north-facing signs across x=4..8, z=10 to the south glass wall. Sneak-place another north-facing sign on the north edge of each first sign at z=9.

💡 All ten signs are dry and collisionless. Sign-to-sign attachment creates a complete 5x2 fluid barrier while allowing golems and drops to pass.

Place lava sources only at (5, 3, 9) and (7, 3, 9). Let them spread across the ten cells above the support signs.

💡 The empty y=1 space separates lava from the hopper floor, so drops fall below the blade. Check that lava cannot flow below y=3 before adding mobs. The three-block horizontal separation from the beds and the shaft wall keep the blade away from their sleeping area.

Build the glass villager floor at y=2, x=3..7, z=3..7, and its two-block-high side and south walls shown. Add the raised three-block walking strip at y=3, z=4, the waist barrier at y=4, z=3, and the stone zombie cage and front screen.

💡 The zombie stands at (5, 4, 1). Its front screen at z=2 is solid below eye level; leave (5, 5, 2) open. Leave (3, 5, 2) for the piston and (4, 5, 2) for the movable brick. The waist barrier prevents villagers approaching the zombie while leaving the eye-level sight path open. The walking strip and beds must remain clear above them.

Place red beds at x=4, 5 and 6 with feet at z=5 and pillows at z=6, y=3, all facing south. Each bed occupies two model cells.

💡 Three beds are required, not six. Each adult must claim and reach a different pillow; the adjacent walking strip at z=4 lets villagers step onto the foot ends. No workstations are required for this Java panic module.

Put glass at (2, 4, 2), an inverted daylight detector above it at (2, 5, 2), and an east-facing sticky piston at (3, 5, 2). Put its movable stone brick at (4, 5, 2).

💡 The detector directly powers the adjacent piston. Its entire vertical column must remain open to the sky. At night the brick moves east into the sole opening (5, 5, 2); in clear daylight it retracts to x=4. The model shows the retracted daytime state. Do not add glass in the opening or a block where the brick extends.

Build the full stone-brick roof at y=6, x=3..9, z=0..8, including the roof over the entire zombie cage.

💡 This roof shades the zombie and closes both living chambers. Its top is the only intended golem spawning surface. Keep the detector at x=2 outside the roof. The low enclosed rooms underneath lack golem headroom; do not raise their roof or add permanent solid walkways nearby.

Build the three-block-high glass rim at y=7..9 along x=3, x=9 and z=0. At y=7, z=9, sneak-place five east-facing wall signs across x=4..8, starting on the east face of the west shaft wall.

💡 These five signs attach in a west-to-east chain and stop tray water above the drop. They must stay dry. Golems pass through their collisionless cells into the shaft; water must never fall into the lava or it will form solid blocks.

Place five water sources at y=7, z=1, x=4..8. Let water flow south across z=2..8 until the dry sign row at z=9 stops it.

💡 Only the north row contains sources. Reuse the two water buckets to make a temporary infinite supply away from the farm, fill the row, then remove the supply and its supports. Confirm the current points toward the shaft and no water reaches the lava.

After dark, temporarily open roof access, bring three adults onto their beds and a named adult zombie into its one-block cage. Restore every removed roof block before sunrise.

💡 Use an already-renamed name tag on the zombie and keep it in the shaded finished cage; a helmet is not a substitute for that roof. Capture and transport methods belong outside the permanent build. Keep difficulty Easy, Normal or Hard. Wait for all three villagers to lie in separate beds with the shutter closed, then verify they panic when it opens in clear daylight.