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Cutch, Ground Extract
$4.40 – $18.00
Ground resin extract from Acacia catechu, sometimes called Catechu.
Use on protein or cellulose fibres. A source of lovely rich browns and rusts. Substantive but pre-mordanting recommended. Use at 20-50% WOF for medium shades.
TO USE: soak 24 hours in water to dissolve, stirring occasionally. Place extract and fibre in dyepot and add more water if necessary. Bring to a high simmer for 1 hour. Let fibre cool in dye liquor for at least one more hour or overnight.
Light and washfastness: excellent
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Madder, Whole
Dried roots of Rubia tinctoria, available ground or whole.
Use on protein or cellulose fibres. Pre-mordanting recommended. A classic dye, giving dramatic reds, brick-reds to orange and coral. Use at 50-100% WOF for medium shades.
TO USE: simmer in water below 185°F for 30 minutes. Cool overnight, then repeat simmer and strain. Add more water and enter pre-mordanted fibre. Hold below 158°F for one hour. Higher temperatures produce browns. Whole madder is best chopped up first in an old blender, or soaked overnight then ground as best you can in the blender with the soaking liquid. Rita Buchanan once described the process as attempting to break pencils with your bare hands. Despite this, many dyers claim the best colours come from the dried, whole roots.
Light and washfastness: excellent.
Brazilwood, Sawdust
Sawdust or extract from a tropical tree, Caesalpinia punctata. This species is from southeast Asia and is not the endangered species native to Brazil but still produces good, rich colours. It is also called Sappanwood or Eastern Brazilwood.
Use on protein or cellulose fibres. Best with a premordant. A classic dye that gives rich crimson, purple or pink, depending on the mordant. Brazilwood is very generous and, although expensive, a dyebath can yield up to 7 or 8 successive dips. Have plenty of fibre prepared, soaked and ready! Light and washfastness is rated as average.
SAWDUST: Use at 20-100% WOF for medium to strong shades. Soak in water and/or rubbing alcohol for a few hours. Spread on a tray to air overnight. Add to water and simmer 1 hour. Cool and strain. Observe dyebath colour. If it leans towards scarlet-orange, stir in a teaspoon of Soda Ash to push the pH higher and change the dyebath to more of a purple-red. Add small amounts of Soda Ash until this happens. Enter premordanted fibre to dye liquor and simmer 1 hour.
EXTRACT: Approximately 6 times stronger than sawdust or chips. Use at 20-50% WOF for medium to strong shades. Dissolve in hot tap water and add to dyepot. Adjust pH with Soda Ash as outlined above. Enter premordanted fibre to dye liquor and simmer 1 hour.
Logwood, Extract
Dried and cured chips from a tropical tree, Haematoxylum campechianum.
Use on protein or cellulose fibres. Pre-mordanting essential. Produces dramatic pink, blue, maroon and purple to black shades. Use at 20-50% WOF for medium shades.
TO USE: place chips in a stocking and soak overnight in cold water. Bring to a simmer for 1 hour, cool and remove stocking. Enter premordanted fibre and simmer for 1 hour. Bath may be used for successive dips, and by the 3rd or 4th dip the colours being yielded change to golds, greens or browns.
Light and washfastness: average. Keep dyed fibres away from bright light.
NEW: Logwood Extract: this has already been soaked out then reduced down to a powder. It's expensive but very strong and super convenient. Simply weigh out the extract at around 10% weight of fibre for medium shades, or adjust for darker or lighter. Dissolve in a measuring cup with hot (but not boiling) water, add to your dyepot with water, mix well, add your fibre and simmer for an hour.
Madder, Ground
Dried roots of Rubia tinctoria, available ground or whole.
Use on protein or cellulose fibres. Pre-mordanting recommended. A classic dye, giving dramatic reds, brick-reds to orange and coral. Use at 50-100% WOF (weight of fibre) for medium shades.
TO USE: simmer in water below 185°F for 30 minutes. Cool overnight, then repeat simmer and strain. Add more water and enter pre-mordanted fibre. Hold below 158°F for one hour. Higher temperatures may produce browns rather than oranges or reds, so try to avoid bringing to a high simmer or boil. Ground madder is much easier to work with than the whole dried roots..
Light and washfastness: excellent.