Putting the can too close to the cardboard will cause it to run. Your arm should form a 90-degree angle with your elbow. Hold the can 6-12 inches from the cardboard and spray from side to side, creating long strokes. Be sure to reshake your paint if you leave it for a few minutes and after every one hour during usage. Shaking also helps the pigments blend properly, giving the paint an even gradient. Some chemicals make paint adhere to its surface, so you need to shake it, so it doesn’t form bubbles as you spray. Shake your spray paint can for a minimum of one minute. Put on protective gear like a face mask and gloves. Protect your working area using old newspapers or sheets. If the temperature isn’t favorable for painting cardboard, wait for a finer day. Ensure there’s no wind and the surface you are spray painting is warm and dry. Spray painting should be done outside or in a well ventilated area because the fumes from spray paint can be toxic. To get the best results, be sure to follow these steps. How much paint you use will also depend on how large the area is and whether it’s covered in a primer coat. How many coats you need will depend on how opaque your color is. Spray painting cardboard is a quick and easy way to add color. If the paint starts curling before it fully dries, wait for it to dry and then sand lightly using light pressure until the surface is smooth. How many coats you need will depend on the opacity of your color- so consider making a test strip to experiment with different numbers of coats. Step 4: Apply a Second CoatĪfter your first thin coat has dried completely, apply another one. Keep in mind that water-soluble paints can be removed with water, so touch up any areas where paint may have dried before it has had time to dry completely. How many times you need to change your applicators will depend on the stiffness of the cardboard. It doesn’t matter which switch to the other if either one starts to curl. You can use a dry brush or sponge for this step as well. How many coats you need will depend on how opaque your color is and how light the surface of your cardboard is. Using smooth, continuous strokes, apply thin coats of paint cardboard. Remember, too much paint distorts the cardboard. Applying paint directly to your brush will help you control the amount of paint you use. To avoid curling, don’t apply the paint straight onto the cardboard. How much you use will depend on how large an area you are painting.
Then, squeeze paint onto your sponge or dry brush directly from the tube or mixing bowl. Step 2: Apply Paint to BrushĮnsure your foam brush is completely dry before you start painting cardboard. Using smooth back-and-forth motions, sand until all of the bumps and protrusions have been smoothed. Lightly sand your surface if the roughness caused by the gesso will distract your painting. Then, if you can see the cardboard, give it a third coat. Like any paint applied over an existing finish, Gesso will brighten the colors of your artwork because it contains a substance known as glue.Īpply a second coat of gesso in the opposite direction of the first coat. Using a flat brush, paint a thin coat of gesso on your cardboard in long, vertical strokes. Follow these simple steps for your application process. Use a sponge or dry brush for painting to avoid warping. They are easy to clean up with water, so if you spill some paint anywhere, it won’t leave a stain. You can use water-based paints like acrylics on cardboard because they don’t dry like oil-based paints.
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