What is the difference between mineral spirits and paint thinner, and how do they each affect the outcome of a painting project?

Mineral spirits and paint thinner are both solvents used to clean paint brushes and thin paint. The main difference is that mineral spirits are refined from petroleum, while paint thinner is a generic term that can refer to various solvents. Mineral spirits are milder and less harsh on surfaces, making them better for delicate projects. Paint thinner, on the other hand, can be more aggressive and may affect the finish of the paint. Choosing the right solvent can impact the final appearance and durability of the painting project.