How to Spray Car Paint?

[OAmelia]

Here is the introduction to car paint spraying methods: 1. First, use a blow gun (spray gun) to dry the water in the car gaps—cover areas not to be painted with newspaper—then start mixing the paint. 2. For 1K paint, the mixing ratio is 1/2; for 2K paint, the ratio is 4/2/1.5. After mixing, pour the paint into the spray gun using a funnel (to filter out impurities)—then pick up the spray gun and a dust cloth, blowing and wiping the area to be painted (the surface must be clean and smooth) to achieve a good paint finish. 3. 1K paint spraying method: Move the gun evenly, first covering the prepared surface with two even coats—then spray from the bottom up in a 2/1 pattern—apply layer by layer, ensuring each layer dries before the next—after each layer, wipe with a dust cloth (the paint surface tends to get dirty or rough), repeating until the original paint color is covered—then clean with a dust cloth—and apply clear coat. 4. Clear coat spraying is slightly more complicated than 1K paint because excessive application can cause runs. Generally, apply two coats: the first lightly, the second for a glossy finish, still spraying from the bottom up. The first coat should be misty, moving the gun in a 3/1 pattern, then let it dry briefly before applying the second coat in a 3/2 pattern for gloss. 5. 2K paint spraying method: Move the gun evenly, first applying two thin coats over the putty and letting it dry—then spray two even coats from the bottom in a 3/1 pattern and let dry—since 2K paint is inherently glossy, no clear coat is needed—finally, apply 2K paint in a 2/1 pattern for an even glossy finish.

[DelMalia]

Last time when I helped a friend with touch-up painting in my home garage, I realized the most crucial part is the preparation work. First, thoroughly wash the car body, then use coarse sandpaper to sand the scratched area until obvious burrs appear. Next, protect the surrounding areas with tape, making sure all gaps are tightly sealed. When mixing the paint, take the original factory color code to a professional shop where they can match the color more accurately using a computer. Keep your hand steady while spraying, holding the spray gun about 20 cm away from the car body, moving at a constant speed like painting a wall. First, apply a thin layer of primer, wait for it to dry, then spray 3-4 coats of color paint, and finally apply two coats of clear coat. Wait half an hour between each layer, and always wear a mask in a well-ventilated area. After finishing, let it dry for at least two days before touching. Remember to gently sand it smooth with 2000-grit sandpaper and water, then polish it.

[SanMadelyn]

Spraying car paint is something I've tried a few times, and I've learned that details make all the difference. First, use putty to fill in dents, let it dry completely, then sand it smooth with sandpaper of varying grits from coarse to fine. The cleaning step is especially crucial—you must use degreaser to remove all oil and dust. When mixing the paint, pay attention to the thinning ratio; too thick and it will clump, too thin and it won't adhere. Set the spray gun pressure to 2-3 kg, move at a steady speed, and keep your wrist flexible, not stiff. Applying the color coat in several thin layers is the most reliable method, with a 10-minute flash-off between each layer. Finally, the clear coat should be sprayed full and even—don't skimp on the material. After spraying, it's best to cover it with a dust-proof tent and use a heat lamp for low-temperature drying for better results. If you notice any runs, stop immediately, let it dry, and then sand it down for correction.

[JackLee]

DIY car painting requires the following tools: spray gun, sandpaper (from 400 to 2000 grit), body filler, masking film, thinner, and a respirator. First, outline the damaged area with tape and sand it to expand the rough edges. Apply metal treatment to prevent rust, then spread body filler like putty to level the surface. Once dry, sand it until completely smooth with no detectable bumps. When masking surrounding areas, remember to seal gaps with adhesive strips. Mix the paint according to the instructions and test spray on cardboard to check the color. During the actual spray, move your wrist in a fan-shaped motion while maintaining a distance of about one water bottle length. The paint should appear wet but not runny. Finally, add 10% hardener to the clear coat for better durability.

[ReaganLee]

Spraying car paint is a skilled job where environmental control is crucial. Choose a well-ventilated, dust-free location with humidity ideally between 40-60% and temperature above 15°C. Use masking tape to cover lights and chrome trims, and newspapers for large surfaces. Wipe the area three times with a tack cloth before spraying—fine dust can cause paint pimples. Mix paint with matching thinner until it reaches a milk-like consistency. Test spray on an old panel to adjust the spray gun's fan pattern, using a narrow fan for tight gaps. The actual spraying is done in three passes: first a mist-like coat for adhesion, second for full coverage, and third to touch up missed spots. Avoid touching the paint during flash-off between coats. Apply clear coat thicker for a mirror finish—if dust nibs appear after drying, polish them out with compound.