How to Use Quick-Drying Putty?
2 Answers
Pre-treatment: First, wet the sandpaper with water, then use the sandpaper to sand down dents and scratches, and finally wash away oil stains and dirt, allowing it to dry. Filling: You can use a small hard card or a small spatula to apply the putty, ensuring it is slightly higher than the surrounding area. After about an hour, use 400~1000 grit sandpaper with water to sand it smooth, completing the fine sanding. Then, use 2000 grit sandpaper dipped in water to sand the repaired area. The topcoat is now complete. Ensure the work area is well-ventilated. If the putty is applied too thickly, the interior will not dry. Therefore, control the coating thickness to within 1mm.
Let me explain how to use quick-drying body filler, something I frequently handle during car repairs. First, clean the surface thoroughly – I usually lightly sand off rust or impurities with sandpaper, and if there's grease, wipe it down with a degreaser. Then open the filler can; if it's a two-component type, remember to mix according to the instructions' ratio – never too much or too little. I use a small spreader to mix it evenly. When applying, just spread a thin layer; don't go thick, otherwise it dries slowly and is prone to cracking. It usually takes about 15-30 minutes to dry completely, then carefully sand it smooth. Finally, spray a layer of paint for protection – this method is quick and reliable for fixing small dents and scratches. Beginners often forget to wait for drying time and rush into sanding, ending up with a ruined surface and wasted effort. Remember to be patient – the filler is truly ready when it's dry to the touch and not sticky.
