3x3 Piston Door

The 3x3 Piston Door is a hard medieval redstone build for Minecraft Java 1.21, 21 blocks wide, 16 tall and 19 deep. It takes 1,124 blocks of 30 kinds, mostly stone bricks, cobblestone and stone brick stairs. The free guide breaks it into 18 steps with a picture for each, about 53 minutes of building.

Stone Bricks×366Cobblestone×163Stone Brick Stairs×117Mossy Stone Bricks×88Grass Block×79Cracked Stone Bricks×48Stone×45Chiseled Stone Bricks×41Redstone Wire×33Moss Block×21Smooth Stone×17Short Grass×13Sticky Piston×9Lantern×8Fern×7Oak Leaves×7Slime Block×7Gravel×6Redstone Repeater×5Vines×5Azalea Leaves×4Green Glazed Terracotta×4Moss Carpet×4Mossy Stone Brick Wall×4Obsidian×4Redstone Torch×3Stone Brick Slab×3Mossy Stone Brick Slab×2Lever×1Observer×1

Icons: textures REFI by MysticTempest · CC BY-SA 4.0