Osetreni kozesin/kuze
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- Stálý přispěvatel
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- Location: svobodné území Beskyd
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- Location: Pečky
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- Stálý přispěvatel
- Posts: 1814
- Joined: Thu 01. Jan, 1970 1:00
- Location: svobodné území Beskyd
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- Stálý přispěvatel
- Posts: 250
- Joined: Thu 01. Jan, 1970 1:00
- Location: Pečky
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- Stálý přispěvatel
- Posts: 1243
- Joined: Thu 01. Jan, 1970 1:00
- Location: Chlumec nad Cidlinou/Praha/Mikulčice
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- Stálý přispěvatel
- Posts: 665
- Joined: Thu 01. Jan, 1970 1:00
- Location: Pozořice
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- Stálý přispěvatel
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A sakra, a mám to. Prokoukls mněcossack wrote:Jojo, právě jsem to chtěl napsat. Ona se tak vyřádila matka příroda. Bílý, hnědý, černý i flekatý jsem viděl.
Brume, Brume s takovou si budeš muset nachat zajít chuť na LH sraz , šidit barvu .
A to nevíš, že nejen barvu, ale celou kůži (páč indiáni byli spíš na ty bizony že jo, a ne na ovečky )
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No vidíš to, ještě že jsi se prásknul sám, k čemu to má být. Bizon je spíš do hněda než černej. Kdysi jsem v nějakém Trapers buletinu četl, že obarvit by to mohlo jít nasyceným roztokem hypermanganu. Ten je běžně k sehnání v lékárnách.
Jestli ale můžu přidat osobní poznámku - vykašli se na to. Nebudeš sám, kdo má ve stanu bílý berany, těch bizonů u nás ještě není tolik. Právě tím, že to obarvíš, tak bude barevný i "řemen" na té kožešině a o to, to bude nápadnější. To už je fakt lepší zajet si do Polska pro ty hnědý kožešiny.
Jestli ale můžu přidat osobní poznámku - vykašli se na to. Nebudeš sám, kdo má ve stanu bílý berany, těch bizonů u nás ještě není tolik. Právě tím, že to obarvíš, tak bude barevný i "řemen" na té kožešině a o to, to bude nápadnější. To už je fakt lepší zajet si do Polska pro ty hnědý kožešiny.
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- Stálý přispěvatel
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Díky za rady. Já bych se vykašlal i na ty bílý berany. Ale když je mám zadarmo...
Zkoušel jsem si na nich vydělávání... a chtěl bych zkusit i to barvení...
Jde mi o to to zkusit, nechci maskovat to, že to není košer
Košer není beran bílej, ani barevnej. Jen to chci zkusit.
A fakt mi vrtá hlavou, jak se to polákům daří barvit (a hlavně se jim ta práce s tím vyplatí).
Hypermangan zkusím na menším vzorku... ale podle mne to bude spíš do fialova...
Zkoušel jsem si na nich vydělávání... a chtěl bych zkusit i to barvení...
Jde mi o to to zkusit, nechci maskovat to, že to není košer
Košer není beran bílej, ani barevnej. Jen to chci zkusit.
A fakt mi vrtá hlavou, jak se to polákům daří barvit (a hlavně se jim ta práce s tím vyplatí).
Hypermangan zkusím na menším vzorku... ale podle mne to bude spíš do fialova...
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- Location: Brno
White tawed leather – production
The white tawing method was usually carried out on skins of
sheep and goat, but also pig and calf skins were used. The
following description of how the process was carried out is
based on detailed descriptions from the 16th to the 18th century. After slaughtering the skin was either dried or salted to
preserve it and the tawer had to soak it in water before further
processing. This was followed by unhairing the skin in a lime
pit at a pH-value of 10-13. In this process hair and other epidermal
structures were loosened and the remainings could
subsequently be mechanically removed over a beam of wood
with a blunt knife. A further purpose of the liming process
was to clean, loosen and swell the fibre structure. Over the
beam the skin was fleshed to clean and level the flesh side and
the grain surface was ‘scudded’ with an unhairing knife, a
process where the surface was cleaned of further remains of
hair, lime, grease and dirt. Eventually unwanted pieces of the
skin were cut off, a process called ‘trimming’. Afterwards some
tawers used a process called ‘bating’, where the skin was immersed
in warm water with dog dung. Others used fowl droppings,
then the process was called ‘puering’. Enzymes in the
dung digested and dissolved some of the proteins in the skin
and with further scudding it resulted in a very smooth grain.
Bating/puering could be replaced by ‘bran drenching’, where
the skin was immersed in warm water with husks of cereals, a
solution which liberated small amounts of weak organic acids.
The effects of the process were similar to them of bating
but with the advantage that any residual lime in the skin was
neutralised. With additional scudding the skin was ready for the tawing process. An aqueous solution of alum and common
salt was prepared together with egg yolk and flour, and
with immersion and agitation of the skin in this paste mixture,
it was absorbed by the skin. A solution of alum and salt alone
could also be used, but this gave a rougher and more inflexible
leather with less water resistance. The leather was hung
to dry over weeks to age, a stage where the aluminium salts
fixed better in the skin. At this stage the leather was stiff and
inflexible. So the final process was a softening process, called
‘staking’, where the flesh side of the leather was mechanically
stretched by pulling it over a blunt wooden or metal edge.
The final result was a white leather, soft and stretchy and with
a very smooth, silky grain. Some leathers were subsequently
surface coloured in red, blue, green, or black [10].
Alum tawing is defined as a semi-tannage as the leather is
not stable in water like a vegetable tanned leather. Right after
tawing the aluminium salts can be washed out with water, but
ageing for a long time or contents of grease or fat will improve
the water resistance. Today more stable products are
obtained by using aluminium chloride or sulphate instead of
alum. Also the use of a pretannin or retannin with glutaraldehyde
is used today.
A mnohem více zde:
http://palimpsest.stanford.edu/iada/ta99_067.pdf
The white tawing method was usually carried out on skins of
sheep and goat, but also pig and calf skins were used. The
following description of how the process was carried out is
based on detailed descriptions from the 16th to the 18th century. After slaughtering the skin was either dried or salted to
preserve it and the tawer had to soak it in water before further
processing. This was followed by unhairing the skin in a lime
pit at a pH-value of 10-13. In this process hair and other epidermal
structures were loosened and the remainings could
subsequently be mechanically removed over a beam of wood
with a blunt knife. A further purpose of the liming process
was to clean, loosen and swell the fibre structure. Over the
beam the skin was fleshed to clean and level the flesh side and
the grain surface was ‘scudded’ with an unhairing knife, a
process where the surface was cleaned of further remains of
hair, lime, grease and dirt. Eventually unwanted pieces of the
skin were cut off, a process called ‘trimming’. Afterwards some
tawers used a process called ‘bating’, where the skin was immersed
in warm water with dog dung. Others used fowl droppings,
then the process was called ‘puering’. Enzymes in the
dung digested and dissolved some of the proteins in the skin
and with further scudding it resulted in a very smooth grain.
Bating/puering could be replaced by ‘bran drenching’, where
the skin was immersed in warm water with husks of cereals, a
solution which liberated small amounts of weak organic acids.
The effects of the process were similar to them of bating
but with the advantage that any residual lime in the skin was
neutralised. With additional scudding the skin was ready for the tawing process. An aqueous solution of alum and common
salt was prepared together with egg yolk and flour, and
with immersion and agitation of the skin in this paste mixture,
it was absorbed by the skin. A solution of alum and salt alone
could also be used, but this gave a rougher and more inflexible
leather with less water resistance. The leather was hung
to dry over weeks to age, a stage where the aluminium salts
fixed better in the skin. At this stage the leather was stiff and
inflexible. So the final process was a softening process, called
‘staking’, where the flesh side of the leather was mechanically
stretched by pulling it over a blunt wooden or metal edge.
The final result was a white leather, soft and stretchy and with
a very smooth, silky grain. Some leathers were subsequently
surface coloured in red, blue, green, or black [10].
Alum tawing is defined as a semi-tannage as the leather is
not stable in water like a vegetable tanned leather. Right after
tawing the aluminium salts can be washed out with water, but
ageing for a long time or contents of grease or fat will improve
the water resistance. Today more stable products are
obtained by using aluminium chloride or sulphate instead of
alum. Also the use of a pretannin or retannin with glutaraldehyde
is used today.
A mnohem více zde:
http://palimpsest.stanford.edu/iada/ta99_067.pdf
Svatopluk vyslal tajně početné vojsko a přepadl Bavory, kteří byli zanecháni na břehu řeky Dunaje ke střežení lodí. Jedny pobil, druhé dal utopit v řece, jiné pak odvedl jako zajatce.
Pravoslav, Orcae Ita
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Základ je mít dost psích hovínek. A ty sběračky měly prý spešl názvy, běhaly po městě a sbíraly je. Zlaté časy...někde jsem četl, že ty nejsvětlejší byly nejlepší:-)
Svatopluk vyslal tajně početné vojsko a přepadl Bavory, kteří byli zanecháni na břehu řeky Dunaje ke střežení lodí. Jedny pobil, druhé dal utopit v řece, jiné pak odvedl jako zajatce.
Pravoslav, Orcae Ita
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- Stálý přispěvatel
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- Location: Brno
Oni pak používali i trus jiných zvířat. A někde jsem četl o barvení či odbarvování pomocí rostlinných, ne minerálních ingrediencí. Ale jak takhle dostat bílou, to jsem nenašel nikde.
Svatopluk vyslal tajně početné vojsko a přepadl Bavory, kteří byli zanecháni na břehu řeky Dunaje ke střežení lodí. Jedny pobil, druhé dal utopit v řece, jiné pak odvedl jako zajatce.
Pravoslav, Orcae Ita