We tend to think of paint as something that must be applied to a surface, and that's all most paints are capable of, until now. Acrylics are plastic; they dry to form a solid flexible, transparent skin. While we know that these qualities make for a durable paint medium, what may be a surprise is that they also give acrylics the ability to be used as sculptural tools. Without the sustenance of a support, acrylic paint becomes so much more than mere coating. You can whip it, carve it, slice it, dice it, smear or spread it into a solid mass or sheet. And once you have done that, you can inprovise to create incredible soft sculptures. The warm acrylic film will stick very well to itself, as well as to other things. It can be stretched, stuck, or pured onto a surface to coat an armature or object. Sheets of dried acrylic, colors and mediums can be used to produce translucent and rigid sculptures that can stand alone or be made to appear to drip from the walls and ceiling. Creating a freestanding, three-dimensional acrylic paint sculpture can be a tricky process for two reason. First, the acrylic paint film is a soft, pliant material, in order to give the film enough rigidity to hold its shape, the acrylic sheet must be reinforced with some type of internal support. The support can be flexible one, such as a pliable wire, or a rigid one, like a bamboo skewer. The second challenge to creating freestanding sculptures is that acrylics are a thermoplastic, and thus the ambient temperature has to be takken into account. heat will cause the film to sag, stretch, and stick to itself, while cooler temperatures will make the acrylic stiffen and be susceptible to breakage. The solution here would be to build three-dimensional projects at room temperature. Sculpting with acrylic presents some unique possibilities. The acrylic sheets can be made to llok like fused glass by combining acrylic color in different stages of drying, or items can be embedded into the soft acrylic to accent sculptural work.
Purplose of Acrylic Ground
The purpose of acrylic ground is to protect and seal the support plus provide the paint with something to bond to. Absorbent asupports like paper, wood, and canvas will readily soak up the paint. Applying a gesso or other base coat not only seals the material but allows the paint to flow more freely over the surface instead of geeting caught in the grain. Priming the paint support is economical as well as vital to the longevity of a piece.
Priming wood and wood products
Priming wood and wood products is of particular importance for several reasons:
1. Change in temperature causes wood to shrink, expand, and warp, which can stretch the paint film beyond its tolerance.
2. Water absorption into the wood either from exterior sources or from the paint itself will cause the wood to expand while wet and contract as the paint dries. This could cause the paint to dry unevenly, which can trigger cracking or cratering
3. Any sap still present in the wood can inhibit proper curing in the paint, and can stain light colors.
4. Large knots in wood should always be sealed with proper wood sealer before being primed with an acrylic product.
Guaring against acrylic paint damage
Even thoroughly dried acrylic can sometimes fall prey to water, chemical, or mildew damage. One way to guard against this is to seal a porous support in order to inhibit the absorption of any agents that could have an adverse affect on the paint film
acrylic retarder and flow release agents are translucent and can become slightly gray or yellowish as they age and are exposed to UV light. This light discoloration in no way affects the hue of the paint, as once it has done its job, it comple