This method is called dry-ice cleaning. Workers use it to remove stains from car parts by blasting high-pressure dry-ice pellets onto the surface. The –78°C dry ice absorbs heat instantly, making dirt brittle so it breaks off easily. But when parts are heavily rusted, workers often switch to sandblasting, which has stronger abrasive power—though it can also damage delicate components. That’s why for high-precision metal parts, laser rust-removal is usually used instead, offering cleaner results

101K views · 496 reactions | This simple and fascinating dry ice...