Automobile Putty Formula?
2 Answers
Automobile putty formula consists of: 70-75% double fly powder, 20-25% gypsum powder, 2-2.5% carboxymethyl cellulose powder, 2-2.5% retarder, and 0.4-0.6% thickener. Mix double fly powder, gypsum powder, carboxymethyl cellulose powder, retarder, and thickener evenly to form the finished product. Below is an introduction to automobile putty: 1. Function: Automobile putty is used in automobile painting on the first or second primer after sanding to fill small defects, pits, scratches, or other processing marks, forming a smooth surface for applying the next coat of paint. 2. Characteristics: It features high pigment and filler content, thick paste consistency that dries easily, becomes hard and fine after drying, and is easy to sand. Commonly used types include water-based and oil-based.
I remember when using body filler for auto body repairs, the formula is primarily based on a mixture of polyester resin and talcum powder. The typical ratio is 30% resin to 70% powder, with a bit of hardener added to accelerate curing—mixing requires careful stirring like making a cake to avoid air bubbles. I've also tried adding aluminum powder to enhance toughness, which helps better fill dents. However, be aware that homemade mixtures may lack precision, leading to cracks or peeling, so now I just use commercial pre-mixed products to save time. Actually, different vehicle body materials like sheet metal and plastic require different fillers—plastic parts shouldn't be too hard. Additionally, the curing process releases fumes, so I always wear a mask and ensure proper ventilation in the garage for safety. This material is the foundation for sanding; only after smoothing it out can you spray paint for a flawless finish. Beginners should practice on small repair areas first and avoid rushing.
