Pistons are incredibly versatile blocks. When powered by redstone, they extend to push blocks; when unpowered, they retract. Sticky pistons can also pull blocks back.
: Place one solid block directly on top of each piston face. Leave the space directly above the pressure plate open. lovely craft: piston trap
Piston traps have a wide range of applications in Minecraft, including: Pistons are incredibly versatile blocks
Find a 2-block-wide hallway inside your base. Dig a hole directly under the floorboards that is 2 blocks wide, 4 blocks long, and at least 3 blocks deep. Fill the very bottom with lava, or dig it 20+ blocks deep to ensure lethal fall damage. Step 2: Position the Sticky Pistons they extend to push blocks