Use a large, flat brush to apply the chalk. The larger the surface, the larger the brush you will need. Dip the brush in the chalk and pass it over the canvas. Make sure you evenly cover the entire surface of the canvas.
Use a 3-inch decorator brush to apply chalk directly to the stretched canvas with even strokes. Work the canvas from top to bottom, in parallel lines from edge to edge. Immediately wash the brush under running water, then use a brush cleaner to completely remove the chalk.
Gesso dries to the touch for 1020 minutes, depending on humidity, temperature and air currents. If you want to apply an extra layer of plaster, all you have to do is wait for it to dry. Let it dry for at least 24 hours before painting it with oil.
Whether or not you need to paint on a primed plaster surface depends on the type of paint you are using. If you are using acrylic paint, it is not necessary to use a chalk. It is imperative for oil painters to create a kind of barrier between the oil paint and the raw material.
You can prepare a canvas with acrylic backing, clear chalk, or rabbit skin glue. If you work with acrylic, you can also paint directly onto raw canvas without a primer. Oil paint needs a primer to protect the canvas from the linseed oil contained in the oil paint.
If a pre-stretched or purchased canvas says it is primed with acrylic, don’t worry, you can start painting (acrylic or oil) right away. Or even several layers, if necessary smooth the surface of the plaster or primer with sandpaper.
You can only do this with acrylic (you cannot mix it with oil unless it is mixable). I always do it. You can also use chalk in the paint itself to create effects. In fact, I generally use chalk instead of painting white to save material and it works well.
If acrylic is the answer, you don’t really need to prime the fabric as the chalk used to prime the canvas is actually an acrylic paint that protects the fibers of the fabric and gives the paint a good surface to fix it.
Gesso describes the water-based primer, i.e. the traditional corrector / calcium carbonate or the modern variant of the acrylic polymer, while primer is the name reserved for an oil-based primer for oil painting.
A hill is simply the first solid color on the canvas before actually starting to paint. All the stretched canvases purchased have a white top. There are several reasons for this: these canvases are always primed, ready to be painted, and the most popular chalk paint is white.
Gypsum is not only a better surface than white paint, it also gives a certain texture to the surface. But more importantly, if you are not using a chalk, the canvas will draw paint and you will use more paint.
I applied a layer of chalk to lighten or cover it. This action should not only lighten the bottom, but also tighten the canvas and I like it. First, apply some water to the back of the canvas.
Gesso is an important art workshop for the preparation of the canvas for painting. Gypsum is very similar to white acrylic paint, only finer. It dries hard, which makes the surface more rigid. Chalk prepares (or prepares) the surface for painting, gives the surface a certain texture and is ready to accept acrylic paint.
Here’s how I do it: I lightly sanding on a layer of ultrafine water (with a clean brush), then I apply a layer of chalk and try to paint my eyeshadow in that layer. I let the hair dry completely, even with the hair dryer, to ensure complete drying.
A common question with acrylic paint is whether you should use a plaster primer. Technically not. This will give you a nice, slightly more absorbent surface to work with, especially if you’re working on cardboard or rough canvas that you don’t need for a finished canvas.
Prepare your canvas by applying a layer or two of chalk to the surface, be it cotton or linen, this will help in many ways. The white chalk layer - one of the most common backgrounds under the visible surface of a painting - causes a slight lightening of all the colors of the painting.