Prima Marketing Finnabair Art Basics Heavy Gesso is an ultra-thick, opaque acrylic primer used in mixed-media art and crafting. It acts as a durable foundation on surfaces like canvas, wood, metal, and chipboard, providing a chalky, toothy surface that makes paints and mediums adhere flawlessly.
Here are the key details and uses for this popular art medium:
- Key Properties: It is water-based, archival safe, non-toxic, and dries quickly to a flexible, matte, and non-yellowing finish.
- Thick Consistency: Because it is much thicker than standard gesso, it holds its shape perfectly when applied with a palette knife, making it excellent for creating textured backgrounds and raised stenciling.
- Stenciling with Detail: Its stiff viscosity prevents it from seeping underneath stencils, giving you crisp, raised edges.
- Versatile Finishes: It comes in both White and Black. The white serves as a great base for watercolor effects, while the black provides dramatic, high-contrast results when paired with metallic decor waxes or paints.
- Custom Colors: You can easily mix the white gesso with acrylic paints or pigments to create your own custom-colored primers.
- If the gesso feels too thick for your project, you can easily dilute it with a few drops of water to make it creamier for smoother, broader brushwork.


















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