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Spirit varnishes

Spirit varnishes are solutions of natural or artificial pitches in spirit. As pitches shellac and rosin – substances of a phytogenesis more often are applied. The first covering spirit a varnish dries up, as speak, "ю= я№ыш" (i.e. does not stick to fingers if to touch it) during 1-2мин. Full hardening comes through 15мин., and the subsequent layers – within an hour. In house conditions and in general for works manually spirit varnishes are of little use for coverings of the big surfaces, as it is very difficult, it is impossible to put quickly a thin equal layer without strips. Spirit varnish coverings badly resist to moisture action.

At work with varnishes, especially spirit, the great value has an arrangement of light sources. Light should fall on a processed surface at the left or in front at a small angle that tampon or brush traces were distinctly visible.

Before drawing of quickly drying spirit varnish the surface is necessary for clearing carefully of a dust the pure rag which is not leaving pile, or a hair brush. Are less suitable protirochnye materials which can leave the most thin fibres on a surface. Almost invisible, they become appreciable under a varnish film.

For the big planes it is better to use the wadded tampon which has been wrapped up by a piece of a linen or linen fabric. Small and profile details are more convenient for varnishing a brush. A varnish pour in the small portions in a tampon (to dip it in a varnish it is impossible!). The tampon sole should become impregnated so that by easy pressing it a finger the varnish did not flow down. Then fast movements, without strong pressing spend a tampon along fibres from left to right or from top to down, but in one direction, leaving on a surface a wide thin layer. The adjacent strip should mention edge of the previous only.

If to take a tampon in diameter of 25 mm the width of a varnish strip will be a bit more. Hence, for a surface in width of 150 mm should be made six longitudinal movements. With each subsequent movement the varnish in a tampon will decrease that is compensated by gradual strengthening of pressing a tampon.

Along the edges of varnish strips the layer will be fatter, but it will be levelled, if the subsequent layer finds a little on previous, already put. 500 and width 150 mm can be spent for processing of a surface in length no more 2-3мин, including time necessary for elimination of noticed defects. They while are reduced to surpluses of a varnish on edges and product end faces. Surpluses of a varnish should be removed a lung, without pressing, pass by a tampon on sides. Simultaneously it is possible to varnish and edges.

Starting to work for the first time, it is recommended to do all these movements with a dry tampon in a hand to be trained, conveniently to arrange a product on a desktop, to choose for banks with a varnish a place if it is required, to add in a tampon a varnish, once again to check up cleanliness of a surface. In advance it is necessary to think over how to provide a motionless condition of a processed surface - after all to touch it with hands in an operating time it is impossible.

Shading by a brush, desirable and often obligatory at work with an oil paint, for spirit coverings is unsuitable. Even at a covering of fine details, in particular profile, it becomes for one pass by a brush along a product or along fibres.

Furnish spirit varnishes usually finish after drawing of the third layer. For sets from different breeds of a tree the number of coverings is necessary for increasing to receive more equal glossy surface. Last layer la et should be as much as possible thin.

It is recommended to finish the Inlaid products with slowly drying up oil varnishes, and also nitrovarnishes by means of a spray.

Polishing . The first layer of completely dried up varnish grind along fibres very fine-grained skin. To press strongly on kolodku does not follow: a varnish film thin, it it is easy soshlifovat completely.

Before drawing of the second and the subsequent layers after polishing a dry surface carefully clear of a dust. Drying lasts depending on a thickness of a varnish coat from 40мин to 2 ch. And after each following covering drying term is extended. .

There are such defects of varnishing, as appreciable strips at the lateral illumination, formed as a result of application of too dense varnish More often. The raised humidity of wood leads rastreskivaniju a varnish film. Good luster it will not turn out if to reduce endurance terms between operations.

  • Spirit varnishes
  • Oil varnishes
  • Nitrovarnishes
  • Polishing
  • Polishing