A flush door hidden in a stone wall. Pull the lever and four blocks slide away.
You will need
- Sticky pistons8
- Redstone dust14
- Redstone repeaters2
- Lever1
- Stone bricks~40
Steps
- Dig the frame
Clear a space 6 wide, 4 high and 3 deep behind the wall.
- Place the side pistons
Two sticky pistons on each side, facing in, with the door blocks on their faces.
- Add the top and bottom pistons
These pull the inner blocks up and down.
- Wire the lever
Set both repeaters to 2 ticks so the outer pistons fire after the inner ones.
Bedrock note
Bedrock pistons can’t push blocks with block entities, so keep chests and signs away from the door.