1. The paint blisters
First, puncture the bubble. If there is water coming out, it means that moisture has penetrated under or behind the paint layer. Once exposed to the sun, the moisture will evaporate into steam, which will top up the patent leather into bubbles. At this point, first remove the bubbling paint with a hot air spray gun, let the wood dry naturally, then apply the primer, and then repaint the entire repaired surface. If there is no water in the bubble, it may be that the wood grain is cracked and there is a small amount of air inside. When exposed to the sun, the air expands and the patent leather swells. Faced with this situation, first scrape off the bubbling paint, then fill the cracks with resin filler, repaint, or without filler, after scraping the paint, apply microporous paint directly.
2. Cracks appear
In this case, chemical paint remover or hot air spray gun is used to remove the paint and then paint again. If the fracture area is not large, you can use a sanding block or wet and dry sandpaper to moisten the broken paint at this time. After the surface is smoothed, apply putty, brush the primer, and repaint.
3. Paint peeling
Maybe the surface is too smooth. If the original paint is glossy or powdery (add untreated color paste paint), the new paint will not stick firmly to the surface. Or maybe the wood is decayed or the metal has rust spots, and some are peeling off due to poor paint quality. If the paint peels off in a small area, you can sand it with fine sandpaper first, then apply putty, brush the primer, and repaint. Scrape off all the paint due to large-area peeling and repaint.