An oil extractor is a device used to remove oil from various sources, such as seeds, nuts, or olives. It works by applying pressure or heat to break down the material and release the oil. This process is commonly used in the food industry to produce cooking oils, as well as in the production of essential oils for aromatherapy and cosmetics. There are different types of oil extractors, including mechanical presses and solvent extraction methods. Mechanical presses, like screw presses, are often preferred for their simplicity and ability to produce high-quality oil without chemical additives. In contrast, solvent extraction uses chemicals to maximize oil yield but may leave residues in the final product.