What is the difference between varnish oil used for oil painting dama varnish and cooked walnut oil

Varnish will make the picture very bright, not only play a protective role, but mainly the painter's preference, some painters like the picture bright, mostly suitable for very thin classical painting. If the painter doesn't like the glossy effect, he won't use it. is selective.

After the oil brush is finished, you can wash it with turpentine, wipe it dry with newspaper, but it is too wasteful, generally use soap, wash it on the soap while dipping it in water, rinse it with water a little bit, and finally wrap the pen head one by one with newspaper and put it away, otherwise the bristles will rise at first, and you will not be able to use it next time.

Supplement: Varnish is a mixture of turpentine and cooked oil, and can also be mixed with turpentine and linseed oil or walnut oil. Let me introduce you to a few concoctions.

Flaxseed oil, referred to as flaxseed oil, is squeezed from the seeds of flax plants, also known as flaxseed oil, good oil is clear, no impurities, sticky, and easy to dry. Now the toning oil sold on the market is generally linseed oil, which has a poor response to the air, and the oil will not dry out, but will only oxidize, but the air temperature is too high and will turn yellow, which also plays a role in glazing.

Walnut oil: It is a good toning oil, which is cold-pressed from walnut kernels, and was mostly used in oil paintings in Europe before the 18th century. After the 18th century, it was replaced by flax oil, walnut oil became brighter than flax oil in the air, and it can keep the color bright after drying, and it will not be like the feeling of glue and pigment left by flax oil.

Cooked oil: If the oil comes into contact with a metal such as lead, it can make the oil dry more easily. Ancient painters mixed yellow pill (low lead oxide) to boil oil, and refined the oil very quickly, this quick-drying oil is called black oil.

Varnish: Mainly used for varnishing and protecting the work after the completion of the work, varnish can restore the color of the whole picture to the appearance when it is not dry. There are many types of varnish, including varnish, polish varnish, mixed varnish, isolation varnish, matte varnish and so on, which can be purchased and made according to your own needs.

However, when applying varnish, you must wait for the picture to dry completely. The thinner the oil layer is applied each time, the better, to prevent future cracking.

Varnish should not be available in stationery stores, because it is a professional oil painting product, and it can only be bought in regular art supply stores. If you want to make your own varnish, you can let me know and I will reply to you. But it's more troublesome, and it won't be easy if you can buy it.

Very different. I rarely use varnish myself. It also depends on what kind of drawing method you use. Different oils can be blended together to change the gloss and drying speed.

After the oil painting is completed, in order to preserve it for a longer time, it will be about half a year to a year, until all the pigments are completely dried and hardened, and then a layer of varnish will be applied to protect the pigment underneath. This layer of varnish, you can imagine it is like a protective sticker for your phone, so that your screen is not afraid of damage, another example is when you press the photo under the glass, the glass is like a varnish, protecting the photo below.

How to use: The purpose of varnizing the finished oil painting is to maintain the same clarity in all parts of the picture, and to protect the color layer oil film from harmful gases and water vapor in the air. The brightness of the varnish of different materials is different, and the painter should choose according to the needs of the work.

The varnished work must be completely dry with the color layer, otherwise it will not have the effect of glazing, and even cracks will occur. Undried layers (still sticky) should never be varnished. Because varnish is generally made by dissolving resin in turpentine, turpentine will dissolve the undried color layer.

The drying time of oil paintings varies depending on the pigment used and the method of painting. The thin painting method usually dries in four days, and it takes a few weeks to dry thoroughly; The thick painting rule takes a month or two or half a year. The drying of oil painting is affected by light, air, and temperature, and no matter what means the painter takes to accelerate the dryness, it will damage the life of the work, especially in direct sunlight, and it is best to let the work dry naturally.

There are many types and usages of varnish, and the main ingredient is generally resin and turpentine. The main categories are Dama varnish and Mas varnish.

According to the different resin content, it is divided into matte varnish and bright varnish, etc., and the larger the resin content, the brighter it is.

Dama resin is cheaper, and Maas resin is much more expensive.

The main usage is, of course, the varnish of the oil painting: after the picture is dry six to twelve months after the oil painting is completed (depending on the thickness of the picture), the surface of the oil painting is varnished with varnish oil to prevent the oil painting from oxidizing. The varnish is washed off every five years or so and a new varnish is made.

If the varnish is mixed with oil paint, it can increase the transparency of the pigment, and the use of varnish or triple oil can also increase the brightness of the picture and effectively avoid oil absorption after drying. However, if you use too much varnish, the picture will turn yellow.

Other uses: You can use Dama varnish as the base in a quick oil painting sketch, apply the varnish to the surface of the canvas that has been done before painting, and then wipe it off with a cloth or toilet paper, so that the bottom painting is best completed in a short time.