A Tin (stannous chloride) mordant can be used to obtain different colour variations than Alum (another commonly used mordant for natural dyeing.
- Use clean, scoured wool or yarn.
- Fill a large pot with clean water and heat.
- Weigh the yarn or clean, dry fleece.
- Using .5% Tin to weight of fibre, mix the Tin into the hot water.
- Rinse the wool so that it is damp.
- Add the wool or skeins of yarn into the hot Tin mordant mixture.
- Make sure that the wool is all covered by the water, if not, add more water to the pot.
- Simmer the mordant mixture for x-about an hour at 90 degrees Celsius.
- Remove the yarns from the Tin mixture.
- The Tin mordant mixture can be reused by adding 1/2 the amount of Tin as previously used.
- 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 Tin mordant mixture is suitable for wools, silks and other protein fibres.