How to Properly Remove Old Paint from a Car

[SanErin]

Methods for removing old paint from a car include sandblasting, manual removal, mechanical removal, chemical removal, electric grinding, and flame scraping. Among these, manual removal, mechanical removal, and chemical removal are more commonly used. Common methods for removing old paint layers from steel surfaces include flame treatment, manual or mechanical methods, and chemical methods. Flame treatment uses high temperatures from flames (such as a blowtorch) to remove oil stains, old paint edges, and oxide scales. Manual or mechanical methods involve using tools like scrapers, putty knives, wire brushes, and sandpaper to remove the paint, or using pneumatic or electric tools. Chemical methods for paint removal include using alkaline solutions and paint removers (models T-1, T-2, T-3). Alkaline solution paint removal involves brushing the alkaline solution onto the old paint layer, letting it dry slightly before reapplying, up to 3-4 times. Once the old paint layer has expanded and softened, it is scraped off cleanly with a putty knife, followed by washing the surface with hot water until all residual alkaline solution is removed.