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Gesso is traditionally a mix of an animal glue binder (usually rabbit-skin glue), chalk, and white pigment. For priming flexible canvas, an emulsion of gesso and linseed oil, also called "half-chalk ground", is used. [4] Acrylic gesso is a mixture of white pigment and some kind of filler (chalk, silica, etc.) and acrylic resin dispersed in water.
genuine gesso ground is a lean ground typically used on top of the boards; half-chalk ground; acrylic ground is made of acrylic resin with titanium white pigment (a "clear gesso" is actually an acrylic without the pigment).
A canvas sized with rabbit-skin glue can be made tighter than with other alternatives—such as an acrylic-based gesso—because of the shrinkage. This type of canvas is also valuable because it can be sanded to a flatter texture, which allows the painter to achieve a finer level of detail than can be achieved with a typical acrylic gesso ground.
Meanwhile, Acrylic gesso is proven to be durable (and more flexible than traditional gesso) and might provide a better bond to the newer acrylic-based pigments.j Acrylic to wood bonding is probably pretty good, but I haven't had a lot of experience, except super-glue which is a cyanoacrylate...
Acrylic paint glazes are often used to create more depth in an image. When glaze medium is applied to acrylic paint, the paint becomes more transparent and will reveal the layer of paint used beneath it, which modifies the color. [5] This technique is commonly used to create more realistic images.
The use of a solvent to remove paint may result in removal of all of the paint layers (acrylic gesso, et cetera). Oils and warm, soapy water can remove acrylic paint from skin. Acrylic paint can be removed from nonporous plastic surfaces such as miniatures or models using cleaning products such as Dettol (containing chloroxylenol 4.8% v/w). [22]