The oil allows us to achieve very rich effects in colors and contrasts. As the oil paint dries very slowly, it allows mixing, making degradations in tones and correcting with ease.
Tips for painting with oils
With the oil, not only linear strokes can be made, but also allows to make glazes, watermarks, stains, etc.
The media used to paint with oil, can be on linen or cotton, on frame or glued to a table. This support must be covered by a very fine layer of plaster and glue or sizing. This preparation is carried out so that the surface to be painted is not so absorbent.
- To paint with oil the first thing that is done is the sketch with pencil or charcoal.
- Then begin to fill the larger parts with a more diluted paint, and continue with a thicker to correct and refine.
- The consistency of the oils tends to be greasy, since the pigments of the colors are dissolved in oil.
- The oil painting is drying not by evaporation but by a reaction with the oxygen in the air. Therefore, the drying is slow and begins in the outer layers and then reach the lower ones, so that the final drying of the paint will depend on the thickness of the same.
- This graduality that occurs in the drying, is what allows to work with a malleable paint, and can produce constant changes.
- When the colors are already completely dry, they do not suffer any kind of variation.
- At the end of painting, it is recommended that a coat of varnish to protect it from dirt, and enliven colors.
Useful products for painting with oils
To work with oil, we also need vegetable turpentine (turpentine), flax oil and cobalt drier.
- Vegetable Turpentine: Is the most widely used solvent for oils.
- Flaxseed oil: Also used to dilute the oils.
- Cobalt drier: It is often used to speed the drying of oil, but has a big disadvantage, cut the paint if used in excess.