Video: Brushes For Finishing Works
2023 Author: Douglas Hoggarth | [email protected]. Last modified: 2023-11-26 20:16
Brushes are common finishing tools. Soft ones are made of wool and squirrels, hard ones are made of pork bristles, horsehair, and synthetic fibers.
Pork bristles are naturally tapered with a bifurcation at the end, resulting in high quality coatings. However, synthetic fiber brushes are superior to natural brushes in terms of wear resistance.
The size and shape of the brush should be appropriate for the type of work being performed. Large brushes paint surfaces of significant size, small ones - narrow areas.
Before use, brushes are washed in soapy water.
If the hair of the fly wrist is inconvenient to use (too long), the brush should be tied around the bundle with twine. To prevent stiff bristles from leaving streaks on the painted surface, new brushes are kept in water for an hour before use: swollen hair makes the paint smoother and falls out less often. If, after soaking, individual hairs again leave stripes, you must first work with a brush on coarse plaster, or rub it with a brush soaked in water or paint on concrete or brick.
Before starting work, the brush is developed for a more even distribution of paint over the beam: it is dipped in paint and wiped on the inner surface of the container. This operation is carried out until the entire bundle is wetted to half the length.
In the process of work, the brush must be periodically rotated so that uniform wear of the hair bundle occurs on all sides.
A brush is considered worn out if the hair is worn more than 60% in length. A 400 g fly-away brush can be used to coat 500-800 m2 of surfaces with oil paints without wear. When finishing with glue paints, wear is less - one brush can paint up to 1000 m2 of the surface.
For a short break when working with oil paints, brushes should be immersed in water, turpentine or kept in paint. In this case, the brush should not touch the bottom of the container.
Before a long break in work, the brush must be thoroughly rinsed: the drying oil, paint and enamels should be washed first in white spirit, turpentine, then in soapy water until the water stops staining.
Tied brushes are untied before washing so that the paint does not dry under the garter - this can ruin the brush. After the glue paint, the brush is washed in warm or hot water, wrung out and hung with a bunch down, giving it the shape of a torch. If the hair is parted, the brush should be lightly tied or wrapped with gauze. To avoid the appearance of fungi, it is advisable to store the dried brush in parchment paper.
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