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Historiska världars forum • Visa tråd - torrt vs blött läder

torrt vs blött läder

Ett forum om hantverk i läder, t ex skor, väskor, pungar.

Inläggav Karin » 5 december 2006, 23:24

Vi har inte alltid fått helt svart färg utan ibland åt det grå hållet. Inte brunt.

Karin
Karin
 
Inlägg: 1273
Blev medlem: 5 januari 2003, 13:41
Ort: Sweden

Inläggav Mia » 6 december 2006, 17:49

Det är väl inte samma sak som rostande metall, men i keramiken har vi järnoxidpulver att färga med. Det finns svart och rött pulver. Båda ger i hög koncentration svart, men vid tunn påläggning/iblandning ger det röda pulvret brunaktig färg och den svarta har alltid blivit svart när jag tagit det, men de sa att den kan bli grådaskig. Jag vet inte om det här tillför något, men jag blev lite undrande varför järnoxid genom rostning ger svart-grå. rost ser ju brun ut.. Jag ska nog knycka hem en nypa oxid och lägga en provbit läder i varje pulverblandning för att testa.
Mia
 
Inlägg: 284
Blev medlem: 27 januari 2003, 11:23
Ort: Sweden

Inläggav Vix Hq » 6 december 2006, 18:26

Lite OT, men jag penslade på <i>mycket</i> svart järnoxid på en keramiksak jag gjorde - resultatet blev varken grådaskigt eller svart, det blev silverglänsande efter bränningen! Hur fint som helst, men kanske inte så relevant i lädersammanhang då skorna helst inte ska in i brännugnen... [:I]

/Vix.
Vix Hq
 
Inlägg: 1244
Blev medlem: 16 september 2002, 22:54
Ort: Sweden

Inläggav Arild Krake » 6 december 2006, 23:13

Järnet reagerar med garvämnena och då blir det svart. Exempel på detta kann ses på diverse gamla ekmöbler där någon ställt järn när det varit fukt närvarande, det är onte helt ovanligt med tex svarta ringar på gamla ekmöbler. Ett typexempel på järn som reagerar med garvämnen kann sen nedan. Detta är vad som händer om man har rustningsben som ligger mot skor som är blöta.

<center>Bild</center>

Ludvig
Arild Krake
 
Inlägg: 1320
Blev medlem: 29 november 2002, 20:50
Ort: Sweden

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