Acrylic paint is a medium commonly used in Paint By Numbers kits. You can thin acrylic paint to achieve differences in consistency and color when painting, allowing you to attain effects that would have otherwise been impossible. These can range in appearance, with some thinned acrylics imitating the look of watercolor or even oil painting. Here are two techniques below you can use to thin your acrylic paints:
1. Start by adding a few drops of water to your numbered paint pot. When only thinning your paint slightly, you should take your brush and wet it in clean water. Too much moisture can leave your acrylic paint looking thin; too little may not have much of an effect at all.
2. Mix in a thinning or anti-congealing agent.
- Be sure you thoroughly mix the water throughout your acrylic. Failing to do so can result in clumping or an uneven color. Add more water to thin the paint to your desirable texture.
- Have paper towel on hand for blotting brushes once you are ready to begin painting. Too much moisture on your brush, or too much remaining moisture after you've cleansed your brush of a previous color, can severely thin your paint, which can lead to drips forming in your painting.
You can use one of these substances in place of water for a more controlled thinning of your paint. You can buy ready-to-use thinning/anti-congealing agents at your local art store. These will keep your paint from drying out too fast and thin it in the process. You should always add your thinning agent according to its directions, but generally, you should apply your agent in small amounts using your brush.
- The composition of each of these thinning agents will likely react differently depending on the kind of acrylic paint you are using. It's best if you add your agent little by little, until it has the desired effect.
Check the consistency with your brush. You should have a spare section on your paint by numbers canvas which you can check the consistency of your paint. As you thin your acrylics, you'll find tint and thickness also change. Take your brush and spread paint after adding your thinner to check if the consistency is as desirably as its hue.
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