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se Golden's GAC Mediums to achieve complete technical control over your acrylic paints and painting environment. GAC Mediums are the raw materials from which other acrylic mediums are created. Use them to modify the working characteristics and appearance of Golden Acrylics and other acrylic paints. 

Golden's other acrylic mediums are a blend of GAC mediums, the raw polymers themselves, with each other, and with other structural elements such as gels or powdered marble dust.

GAC 100: Universal Acrylic Polymer — useful for diluting and extending colors, as well as increasing flexibility and film integrity. Wets out solids more readily than other polymers, and is useful for artists making their own paints.

GAC 200: Acrylic Polymer for Increasing Film Hardness — The hardest and least flexible polymer. Mix with acrylic paints to increase film hardness and reduce dry film tack. Useful for adhering acrylic paints to nonporous surfaces such as glass or plastic. Dries to a clear, gloss finish.

GAC 400: Acrylic Polymer for Stiffening Fabrics — Dries to a hard, stiff film. Allows artists to transform lightweight fabrics into freestanding forms.

GAC 500: Acrylic Polymer for Self-Leveling Applications — Adds a self-leveling working quality, and dries to a high gloss with good transparency. Increases mar resistance, and decreasing dry film tack.

GAC 700: Acrylic Polymer for Increasing Film Clarity — The polymer of choice when film clarity and transparency is desired. It dries to a high gloss film with moderate hardness.

GAC 800: Acrylic Polymer for Reducing Craze — Use when puddles must dry with the same evenness and smoothness as when wet. Other GAC polymers will "craze" when drying, developing shrinkage crevices across the surface.GAC 800 dries with good gloss and flexibility but with moderate clarity. Also ideal for priming chalky surfaces.

GAC 900: Acrylic Polymer for Clothing Artists — Blend with acrylic colors to produce fabric paints. When heat-set properly, it offers a very soft hand and laundering stability. Caution — provide adequate ventilation when using GAC 900 as the heat-setting releases low levels of formaldehyde.

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