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How to varnish a surface
The beauty of the product, especially wooden furniture, is emphasized by applying furniture varnish. But for the product to look beautiful, the varnish must be applied correctly.
Content
- Surface preparation for oil varnish application video
- Varnish the door with oil varnish
- Coat the floor with oil varnish
- Surface preparation for applying acrylic varnish
- Acrylic varnish video
- We prepare cold curing varnish
- Apply cold cure to wood
- Lacquer Finish
Surface preparation for oil varnish application
Before you start applying varnish to the surface of the product - the surface of the wood must be brought to normal condition.
Namely: the surface of the wood should be smooth and clean.
Using a fine-grained waterproof sandpaper, it is necessary to remove small defects, polish the surface with a soft cloth, remove adhering dust particles and be sure to remove all traces of wax if it accidentally comes to the surface, especially if it is an antique item.
Varnish the door with oil varnish
Large flat surfaces, such as doors, are best varnished horizontally.
The application of varnish on a large panel horizontally on the goats, greatly facilitates the work, eliminates the possibility of drips of varnish.
But having shown dexterity, accuracy - this work can also be carried out on a hinged door or a panel mounted vertically, while it is necessary to take measures against varnish drips.
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Firstly, it is necessary to apply the first primer coat diluted with 10% solvent, for this use a brush or soft cloth.
Within 12 hours, the primer should dry.
After the varnish has dried out using a good light source, check the surface.
In the direction of the fibers, using a waterproof skin moistened with water, sand the primer lightly.
Then, wipe the surface with a cloth previously moistened with white spirit and dry it.
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Secondly, the second layer is applied undiluted varnish.
For uniform distribution of varnish on the surface, first move the brush along the wood fibers, and then across them. To ensure that there are no horizontal tears to merge the wet edges, always move the brush in the direction of the area just finished.
Due to the fact that the varnish begins to set in about 10 minutes, it is necessary to work quickly enough, otherwise repeated processing may leave strokes from the brush.
At the end of the application of varnish, light strokes, the very tips of the villi, blend the coating along the fibers.
If vertical surfaces are varnished, then blending is done with light strokes up.
If the varnish is applied correctly, then usually two layers of undiluted varnish are sufficient.
To obtain the best result, before applying the next coat, sand the previous one lightly.
Oil-varnished floors
When varnishing floors, this work is no different from varnishing other wooden surfaces.
But a large concentration of vapors is possible due to the fact that a large surface is processed.
In order to avoid unpleasant consequences, it is necessary to use a respirator, open all windows and doors.
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Work on painting the floor with varnish must be started from the far corner from the room door.
Make sure that puddles of varnish do not form, so carefully distribute the varnish on the surface of the floor.
When applying varnish to the floor, it is convenient to use a paint roller on a long handle.
Surface preparation for applying acrylic varnish
When working with acrylic varnish, use many methods of applying oil varnish.
The purpose of any application of varnish is to obtain an even, smooth coating, without drips, stains and brush marks.
But the chemical properties of acrylic varnish, somewhat change the application technique.
Any wood, after contact with water, absorbs moisture, its fibers swell and emerge in relief on the surface.
Since acrylic varnish is created on a water basis, when applied, of course, the same effect is created.
The result is a product that is far from perfect.
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This problem can be solved in this way: pre-moisten the wood, sand it before applying varnish.
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The second option is possible: before applying the second coat of varnish, grind the first coat of varnish using a fine-grained, moisture-resistant skin.
In both cases, wash the dust with a cloth moistened with water, otherwise a special wiping cloth may leave oil deposits, and they, in turn, will spoil the next layer of varnish.
Acrylic varnish
Acrylic varnish is applied abundantly, using a brush or roller, and then shade.
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You need to work quickly, since acrylic varnish dries in 20-30 minutes, especially on a hot day.
By working quickly, brush marks on the surface of the product can be avoided.
The next layer of varnish can be applied after 2 hours to make the product beautiful, just applying three layers of varnish is enough.
We prepare cold curing varnish
Cold curing varnish includes two components: the varnish itself and the hardener.
Since metal or plastic can react with the hardener, this will hinder the hardening of the varnish. Therefore, to mix the hardener with varnish, it is best in a glass container, you can use polyethylene.
Some varnishes have the ability, after mixing, to remain in working condition for up to three days.
It is possible to extend the working condition of cold cured varnishes up to seven days, but the container must be closed tightly with polyethylene and pressed with a rubber ring.
When stored in the refrigerator, varnish can be stored even longer.
In order to avoid accidents, when storing in the refrigerator, apply large and clear markings.
Apply cold cure to wood
Before applying varnish, it is necessary to clean the wood from dust, sand, remove all traces of wax.
It is necessary to check the compatibility with the varnish of the coloring composition of the product.
It is necessary to familiarize yourself with the manufacturer's recommendations, it is important to create good ventilation, especially if large surfaces are coated with varnish, while maintaining thermal conditions.
The varnish is applied with a brush, a fairly thick layer, do not forget to avoid streaks, do not allow horizontal tears.
A second coat is applied after approximately one hour.
If the surface has no defects, grinding can be omitted, and if a third coat is required, it is better to apply it the next day.
If you used an abrasive grease in the form of washing powder, wipe the sanded surface with a thinner for varnishes.
Lacquer Finish
If you want to get the perfect gloss, a few days after the last layer has hardened, sand this layer with a sandpaper and water.
The result of this work will be a matte surface, a shiny area will indicate a hollow. On a slightly damp cloth, apply a polishing paste and polish the product, and then wipe it with a cloth to erase dust.
If you want to get a semi-matt surface, rub the hardened varnish with an ultra-thin wire washcloth, according to Western standards its number 000, the washcloth must be lubricated with polishing wax. At the final stage, lightly polish with a dust cloth. When working on large areas, you can use a polishing machine.
If you want to get a matte surface - use a larger washcloth, or waterproof sandpaper.