Why Can't Spray Paint Achieve a Mirror Finish?
1 Answers
It may be due to incorrect spraying techniques. Here are some tips for achieving an even and glossy finish with spray paint: 1. Before spraying: Surface preparation is crucial before painting. For plastic parts, wash them with soap and a brush to remove dirt and grease, then lightly sand the surface with fine sandpaper or wet sandpaper. For metal parts, directly sand the surface with sandpaper and remove any residue. This enhances paint adhesion, ensuring durability and a smooth, even finish. 2. Location: It's best to spray paint outdoors on a windless, sunny day to prevent dust from settling on the surface. If indoors, ensure proper ventilation and keep away from fire sources. Hang or position the part upright for spraying. Spray paint uses a high-pressure method, similar to insecticide sprays. Shake the can vigorously several times to mix the paint. Hold the can vertically about 30cm from the surface and spray evenly by pressing the nozzle with your index finger. Spraying too close will result in large paint particles, affecting the finish. Apply light, even coats and use multiple passes. It's okay if the first coat doesn't fully cover—wait until it's mostly dry before applying the next. Repeat with light, even coats until satisfied, typically requiring at least 3 coats for best results. Avoid heavy application in one go, as this causes uneven coverage and runs, which are difficult to fix by sanding or leveling.
