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How To Mordant Cotton and Linen Yarns

Linen and cotton yarns require a different mordant preparation prior to using natural dyes.

Difficulty Level:

Average

Time Required:

90 minutes

Here’s How:

  1. Use clean, scoured wool or yarn.
  2. Fill a large pot with clean water and heat.
  3. Weigh the yarn or clean, dry fleece.
  4. Using 20% Alum to weight of fibre, mix the Alum into the hot water.
  5. Using 10% Tara Powder to weight of fibre, place the Tara Powder into a nylon stocking or small bag. Add it to the hot water mixture.
  6. Rinse the wool so that it is damp.
  7. Add the wool or skeins of yarn into the hot Alum/Tara mixture.
  8. Make sure that the wool is all covered by the water, if not, add more water to the pot.
  9. Simmer the mordant mixture for x-about an hour at 90 degrees Celsius.
  10. Remove the yarns from the mordant mixture.
  11. The Alum/Tara mixture can be reused by adding 1/2 the amount of Alum and Tara powder as previously

Tips:

  • If dyeing skeins of yarn, make sure that the skeins are tied securely, but loosely in at least 3 places, to avoid tangling.
  • The mordanted yarns can be dyed immediately, or dried and stored for later natural dyeing.
  • The mordant is suitable for cottons, linens and other bast fibres.How To

Make an Alum Mordant
How To Make a Tin Mordant
Natural Dyes and Mordant Recipes
How to Scour Linen and Cotton before Mordanting

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This page last edited on September 19, 2017

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