Eight-Cell Automatic Wool Bank in Minecraft

Use zero-based model coordinates with north at z=0. Cell centers are x=3,7,11,15,19,23,27,31 at z=4. Reserve the full 35x10 footprint and seven modeled block layers.

💡 Build the lower collection gallery three blocks below the sheep floor, or excavate around it. Keep mobGriefing enabled so eaten grass becomes dirt and produces the observer trigger. Do not plant tall or short grass inside sheep cells; grazing those plants can bypass floor-change detection.

Fill y=0, x=0..34, z=1..9 with stone bricks, replacing the sixteen marked floor cells with sea lanterns. Build the two-row upper service deck at y=3, z=1..2, its west landing and the three north-rising stairs.

💡 Floor lights are at the eight cell x coordinates, z=1 and z=7. The stairs at x=0 rise through (y,z)=(1,8),(2,7),(3,6), with solid supports below; continue across the y=3 west landing at z=5..2. The north service walking row is z=1. Leave the later circuit support cells at x=center,z=2 ready for the next steps.

For each center x, put south-facing hoppers at (x,1,4) and (x,1,5), then a single chest at (x,1,6). Keep the south faces accessible from z=7.

💡 Both hoppers point toward the chest. There are no shared filters or mixed output buses; each cell keeps its wool separate. Do not place opaque blocks directly above the chest lids.

Put one north-south rail at (x,2,4) over each first hopper, add its hopper minecart, and enclose the rail on all four sides with the four shown glass blocks at y=2.

💡 Keep these rails in place permanently and unpowered; no powered rail, activator rail or moving loop is needed. The rail rests directly on the hopper, which drains the cart. Insert the carts now, before replacing the grass floor. All model entities appear together in the later sheep-loading step; the carts must physically be placed now.

At y=3 place grass at (x,4), (x-1,4), (x+1,4) and (x,5) in each module, using x/z coordinates. The center block covers the retained hopper cart.

💡 Collect actual grass blocks with Silk Touch, or allow dirt to grass over before commissioning. The three neighboring blocks will be protected beneath transparent pen walls, so the sheep cannot eat them. Keep those neighbors alive; replacing them with stone prevents reliable regrowth. There is exactly one full grass block between each cart and its sheep.

At y=3 place the south-facing observer at z=3 and its solid output block at z=2. At y=4 place one redstone dust on that output block and a south-facing dispenser over the observer at z=3.

💡 The observer's detecting face looks south into the central grass; its red dot faces north into the solid block. Dust above that block is directly beside the dispenser and fires it after either grass/dirt change. There are four blocks between circuit centers, so the eight dust dots do not join. This uses direct redstone power rather than Java quasi-connectivity. The dispenser opening faces the sheep's feet, never the floor block.

Build the three glass pen sides at y=4..5, x=center+/-1,z=4 and x=center,z=5. Add the 3x3 transparent roof at y=6, z=3..5, leaving the northern center for the supply chest and using a sea lantern above the sheep.

💡 Leave a temporary loading opening until the sheep is inside. The dispenser and feed hopper form the north wall; the closed roof stops a sheep jumping onto either. Each roof lamp keeps all four grass surfaces bright at night, including the blocks beneath glass walls. Do not replace these glass walls or the lamp with opaque blocks.

Put a downward-facing hopper at (x,5,3) above every dispenser, then a single supply chest at (x,6,3). Load one pair of shears into each dispenser and one into each supply chest.

💡 Sixteen pairs of shears commission eight cells: eight active pairs plus eight spares. The hoppers automatically insert the spares; nine unstackable tools fit in each dispenser. The upper north gallery lets you refill every chest. This is a finite tool reserve, not renewable shears production. Check the feed hoppers are not powered or locked.

Move one adult white sheep into each central grass square and close the temporary glass openings. Keep exactly one sheep per cell and leave its cart centered below.

💡 Use your preferred temporary transport or lure method, then remove it. Do not breed sheep inside these 1x1 cells. A baby cannot be sheared and extra animals can escape or interfere with collection. All eight displayed sheep are white; dye them beforehand only if you want separate color outputs.