GOLDEN - GAC 200 Hard Acrylic Extender for Non-Porous Surfaces (237ml)
Acrylic painting medium
Increases film hardness
Reduces dry film tack
Improves adhesion to non-porous surfaces
Made in the USA
GAC 200: Hard Acrylic Extender For Non-Porous Surfaces is ideal as an additive to acrylic paints to increase film hardness and reduce dry film tack. It improves adhesion to non-porous surfaces. However, some surfaces - such as glass and glazed tile - will not allow for a permanent bond. It dries with high gloss and excellent film clarity, and promotes cleaner edges of hard-edge techniques. The harder paint film has less "pull" as the masking tape is removed.
This is the hardest and least flexible of any Golden Acrylic product. Caution is advised when using this product alone. Used in its pure form, it is limited to applications on rigid supports, as its lack of flexibility may lead to cracking when flexed. When used alone it needs to be applied and left to dry at a minimum temperature of 70F / 21°C.
About GAC Acrylic Polymers
GACs can be blended with Golden Acrylic Paints to extend the paint, regulate transparency, create glazes, increase gloss, reduce viscosity or improve adhesion and film integrity. The GAC polymers can also be used for binding pigment solids for various effects and surfaces. Unlike the other Golden Mediums and Gels, GAC Acrylic Polymers have only a minimum amount of thickeners, levellers, defoamers and surfactants to ensure good film formation.
The consistency of the GAC polymers is very fluid, and thinner than other Golden Mediums. Each GAC product represents a unique polymer that offers certain specific attributes. Therefore, each GAC will have its own unique benefits and applications.
Mixing
GAC polymers should be gently stirred or rocked back and forth prior to use, but should never be shaken, as this will incorporate significant amounts of foam which will be very difficult to eliminate. Foam can severely affect the transparency of the film causing an apparent foggy or hazy quality. When applying with a brush, use minimal agitation and force, and do not overwork, as this too will result in foaming.
Spraying
If spray application is desired, blend with Golden Airbrush Medium. Start at 2 parts GAC Medium to 1 part Airbrush Medium. When faster drying is required, replace the Airbrush Medium with Golden High Flow Medium.
Varnishing
The GAC polymers are intended for use as binders, modifiers or additives for acrylic paints. They are not intended for use as a final varnish. Golden Artist Colours manufactures two different varnish systems, Polymer Varnish and Mineral Spirit Acrylic (MSA) Varnish.
About Golden Mediums
Golden offer the widest range of mediums for acrylic painting. Their range includes gels, additives and effect pastes, which allows you to choose whatever qualities you desire for your acrylic painting: luminous glazes, gritty opaque structures, string effects, glassy areas or variable drying times. This expansive range gives rise to inspiring possibilities that allow you to do very unusual things. Whatever your needs, our Golden range has you covered.
