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Posted on | April 4, 2013 | No Comments
The ability to paint the skin at home is useful when making a new thing or restoring an old one. It’s best to take the first steps in teaching this useful science on small pieces of leather, it’s so much easier to understand your real possibilities, which, of course, are much more modest than industrial ones.
The first thing you should know that dyeing is deep and superficial. With deep dyeing, the skin is stained both from the front and from the seamy side (tanners call it bakhtarma). For this type of dyeing, it is necessary to completely immerse the skin in the dye solution and keep it there for quite a long time. In the case of surface dyeing, the dye solution is applied to the skin surface with a brush, swab, or with a sprayer, while the bachty (wrong) side of the skin retains its original color. Before dyeing, you should carefully consider the skin, especially if it has already been in use, and clean it of dirt and cream. Further, in a slice, it is necessary to determine how it was carved: vegetable (pink-beige cut) or chrome (gray-blue cut). From practice, it can be said that the first option falls into the hands exclusively from artisanal workshops, and practically all leather that is colored in production is exposed to chrome tanning.
It is also advisable to install the skin superficially or deeply before. Again, from practice, it can be said that most leathers in modern production are painted with surface nitrocolors. You can read about how to get rid of this shiny film of unsuitable color here, but I just want to warn you that it is unlikely that it will be possible to give such skin an intense color using deep dyeing at home.
The easiest thing at home to paint the skin with aniline dyes deep dyeing. It is better to choose dyes for wool or universal, although it can be used for cotton, but the skin color is less saturated.
The skin is dyed with aniline dye according to the usual pattern indicated on the ink bag with only one difference: the temperature of the coloring solution should not exceed 45 degrees, and the dyeing time is measured not in minutes, but in hours.
At home, it is good to dye the skin in warm brown tones using a concentrated solution of potassium permanganate.
You can recall the old ways of staining with plants. So, brown tones can be obtained using a decoction of oak bark or crushed acorns, apple bark or green walnut fruit shell. Reddish tint to the skin will give a decoction of buckthorn bark or alder, celandine grass; green – nettle leaves, cherry bark, aspen and willow. If you want to give your skin a golden or beige tint, you can paint the skin with broth of onion peel or tea extract.
Before immersion in the coloring solution, the skin must be well moistened, for which it is kept for several hours in warm water.
Important: after drying, the skin color becomes lighter.
For staining, it is desirable to choose a wide dish in which you can freely rotate the skin for more uniform staining. If during the dyeing from the pores of the skin there are bubbles, then you need to take a stiff brush and rub it well, without removing the skin from the dye solution.
After staining, the skin is squeezed and rinsed first in warm, then cold water. To fix the paint, it is desirable to keep it in an aqueous solution of vinegar and salt (for one liter of water a glass of white vinegar and a tablespoon of salt).
Dry the skin on a wooden surface face up at room temperature, away from the battery and other heat sources, as well as sunlight.
On the intricacies of surface dyeing of leather will be discussed in the next article.