✋Toy bricks have bumps on top.

That is why they snap together.

Bricks are hard plastic.

They start as tiny grains.

The grains wait in big tanks.

🤖The machine melts the plastic. It fills a mold like a brick.

Color is added at the machine.

📦The plastic cools fast. The bricks drop on a belt.

🏠As of November 2026, LEGO is the best-known brick maker.

✋Old bricks fit new bricks. The design is the same since 1958.