Piston
Piston is the fundamental redstone block that pushes other blocks one space when powered.
1.21
Description
Piston is one of the cornerstone components of redstone engineering. It is crafted from three planks on top, four cobblestone on the sides, an iron ingot in the centre and a redstone dust at the bottom. When the piston receives a redstone signal, its head extends one block forward, pushing whatever is in front of it up to twelve blocks deep. When the signal cuts out, the head retracts — but the pushed block stays in place. That single behaviour is the basis for hidden doors, drawbridges, automatic farms, flying machines, and most non-trivial redstone contraptions.
Not everything can be moved: obsidian, bedrock, furnaces with contents, and any block with a tile entity (like chests in Java Edition) resist piston push. Pistons can be aimed in all six directions, including downwards, and they propagate quasi-connectivity in Java Edition — a quirk that hardcore redstone players exploit for compact circuits. For applications that need the block to come back, the sticky variant is the right tool; the regular version is preferred whenever release timing matters.
Not everything can be moved: obsidian, bedrock, furnaces with contents, and any block with a tile entity (like chests in Java Edition) resist piston push. Pistons can be aimed in all six directions, including downwards, and they propagate quasi-connectivity in Java Edition — a quirk that hardcore redstone players exploit for compact circuits. For applications that need the block to come back, the sticky variant is the right tool; the regular version is preferred whenever release timing matters.
Redstone Guide
How to use a Piston in Minecraft
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1
Craft the piston
Place three planks across the top row, four cobblestone in the two side slots and the bottom-left and bottom-right slots, one iron ingot in the centre and one redstone dust in the bottom-centre slot to make one piston.
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2
Place and aim the piston
Put the piston down facing the direction you want the arm to extend; the side you point it toward becomes the pushing face, and a piston can aim up, down, or sideways.
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3
Power it with redstone
Feed a signal from a lever, button, or redstone dust into the piston or the block behind it; the head extends one block and pushes up to 12 blocks in a line.
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4
Cut the signal to retract
Remove the power and the head pulls back, but any block the piston pushed stays in its new position; use a Sticky Piston instead when you need the block dragged back.
Java vs Bedrock
Pistons push up to 12 blocks in both editions, but Java Edition adds quasi-connectivity, letting a piston fire from a powered block above its target — a quirk Bedrock Edition does not share.
How to craft this block
Crafting
Piston
1
Crafting
Piston
1
Used in crafts
- Stirling Kinetic Generator
- Sticky Piston
- Ejector
- Ejector
- Sticky Piston
Frequently asked questions
How do you craft a piston?
Combine three wooden planks, four cobblestone, one iron ingot, and one redstone dust on a crafting table to make one piston.
How many blocks can a piston push?
A piston pushes up to 12 blocks at once; if the line is longer than 12 or contains an immovable block, the piston will not extend.
What blocks can a piston not push?
Pistons cannot move obsidian, bedrock, reinforced deepslate, or any block with a tile entity such as chests, furnaces, and barrels.
What is the difference between a piston and a sticky piston?
A regular piston pushes a block and leaves it in place when it retracts, while a Sticky Piston pulls the block back with its head.
Can a piston push players and mobs?
Yes, an extending piston shoves players, mobs, and dropped items out of its path, a behaviour used for traps and entity sorters.
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