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Doors & Entrancesintermediate1.7+

3X3 PISTON DOOR

A 3x3 flush piston door where all 9 blocks retract smoothly. Requires careful timing so corner blocks move before edge blocks. A signature build for intermediate redstone engineers.

Dimensions: 3W x 3H x 5D minimum

Materials List

Sticky Pistonx12
Redstone Dustx24
Redstone Repeaterx6
Redstone Torchx4
Building Blocksx30
Stone Buttonx2

Step-by-Step Build Guide

  1. 1Build the frame: 3x3 opening with space behind for pistons and wiring.
  2. 2Place sticky pistons behind each column of 3 blocks (6 pistons for sides).
  3. 3Place sticky pistons above and below the center column (6 more for top/bottom/corners).
  4. 4Wire the side pistons to fire first (they pull the side columns away).
  5. 5Add repeater delays so the top and bottom pistons fire after the sides (1-2 tick delay).
  6. 6The center column needs the most delay, it retracts last.
  7. 7Wire buttons on both sides through the timing circuit.
  8. 8Test the sequence: sides retract → top/bottom retract → center retracts.
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