A Piston is a block in Minecraft that can be used to push most blocks in the game. It has an ID of 33.

To craft a Piston you will need:

3 Wooden Planks
4 Cobblestone
1 Iron Ingot
1 Redstone

First, you will need to put a Wooden Plank in each spot on the top row. On the middle row you will need to put the Iron Ingot in the middle and put a block of Cobblestone on each side of it. On the bottom row you will need to put the Redstone in the middle and put a block of Cobblestone on each side of it. To see how it should look more clearly refer to the picture below:

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Similar to a Piston, a Sticky Piston can also be used to push most blocks in the game, but unlike a Piston, it can be used to pull blocks too. It has an ID of 29.

To craft a Sticky Piston you will need:

1 Piston
1 Slime Ball

To craft it you will need to put a Slime Ball in the center of the middle row and put a Piston in the center of the bottom row. To see how it should look more clearly refer to the picture below: