
The causes of bubbling in car touch-up paint include poor paint quality, inadequate conditions and processes, and uneven paint application. Below are relevant details about touch-up painting: 1. Process: Determine the repair area - Assess the extent of damage - Implement construction protection - Surface preparation - Masking and degreasing - Applying base coat - Applying clear coat - Blending treatment - Baking - Sanding and polishing. 2. Quick repair precautions: Primer - The substrate must be completely dry before applying the clear coat to avoid loss of gloss. Base coat - Single-component paint must be used for quick repairs. Clear coat - The spraying pressure should not be too high (2-2.5KPa). Allow 1-2 minutes between coats, depending on the ambient temperature; lower temperatures require longer intervals, while higher temperatures allow shorter intervals. The spraying thickness should be 1.5-2 coats, not too thick, or it will not dry easily. After applying the clear coat, let it sit for 5 minutes before baking. Baking and sanding - Use P1500-P2000 sandpaper to sand away dust spots and achieve a matte finish (dry sanding is recommended; if wet sanding, use plenty of water to prevent scratches from embedded grit). Lightly sand the blending area. Polishing and buffing - Use polishing compound.


