You can absolutely use acrylic paint on 3D-printed models, and it’s actually one of the most popular and beginner-friendly options. With a bit of preparation, acrylics work very well on both FDM and resin prints.
The most important step is surface prep. Straight off the printer, models often have layer lines, support marks, or a slightly slick surface. Light sanding helps smooth things out and gives the paint something to grip. After sanding, it’s a good idea to wash the model with mild soap and water to remove dust, oils, or leftover resin, then let it dry completely.
Priming makes a huge difference. Acrylic paint will stick better and look more even over a primer than on bare plastic or resin. A spray primer or brush-on primer designed for plastic works well, and it also helps reveal surface flaws you might want to fix before painting. For resin prints, priming is especially important to prevent paint from peeling later.
Once primed, acrylic paint goes on easily. It dries fast, has very little smell, and cleans up with water, which is why many modelers prefer it. Thin coats are key—several light layers look much better than one thick coat and help preserve fine details. Acrylics are also great for techniques like dry brushing, washes, and weathering.
After painting, sealing the model is a good idea, especially if it will be handled. A clear acrylic varnish, either matte, satin, or gloss, protects the paint and gives the model a finished look. This step is optional but highly recommended for durability.
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