Viscosity and Consistency
GOLDEN Heavy Body Acrylics are noted for their exceptionally smooth, rich, buttery consistency. These paints have the ability to “stand up” and retain brush strokes or palette knife marks on the canvas.
All HB colors are thixotropic in nature. This means that when brushing or stirring, the paints actually lose viscosity and feel much thinner. The faster the paints are moving, the thinner they feel. Returned to a state of rest, the paints gradually increase in thickness until they are again restored to their formulated viscosity.
The HB colors retain excellent flexibility when dry, greatly diminishing the possibility of cracking that occurs in other natural and synthetic polymer systems. The acrylics can absorb the constant stress and strain placed on canvas when shipped or as it expands and contracts with changes in temperature and humidity. Please note: acrylics begin to harden at 15 degrees Centigrade or 59 degrees Fahrenheit, and become quite hard at temperatures below freezing. This is especially important to remember when shipping a painting in freezing conditions or when unrolling a painting that has been kept in cold storage.
Product Mixing Abilities
The HB Colors can be mixed with all of our GOLDEN Mediums, Gels and other paint lines, including our High Flow Acrylics, Fluid Acrylics, High Load Colors, Iridescent Colors, Paste Paints, and Matte Acrylics. By mixing paint lines, artists can produce a wide range of paint consistencies without compromising color strength. Heavy Body viscosity can also be reduced successfully with water. Remember: the more water added to the acrylics, the greater the subsequent shrinking of the paint layer. Too much water will reduce the binding capability of acrylic paints and tends to flatten out their sheen. Water works most effectively to increase the fluidity of the HB paints if a small amount of Acrylic Flow Release is added to the mixture.
Some artists have used other solvents, including alcohols, to thin the HB Acrylics. All of the acrylics are sensitive to additions of solvent. If you require this addition it is advisable to dilute the solvent first with water to reduce the shocking effect of the solvent. In some cases, adding solvent too quickly will coagulate the acrylic.
Blending with Mediums
The GOLDEN fluid mediums, including Polymer Medium, Acrylic Glazing Liquid, the GAC Mediums and the Airbrush Mediums, can be used to thin Heavy Body Acrylics. They also add a myriad of unique possibilities to the working and gloss properties of the paint surface. All GOLDEN mediums retain the film integrity of the acrylic, and in some cases they actually enhance the durability of the paint film. (Refer to Gels & Mediums Product Review for more information).