Mordanting Cellulose Fibres

I was reading Deb Bamfords blog, A History of Colour, today and her post was about mordanting cellulose fibres. This prompted me write about some mordanting I did earlier this year with my friend Lorraine.

Those of you who visit Pure Tinctoria at Woolfest and Wonderwool Wales will know Lorraine as my very able helper. I wanted to reward Lorraine for all the help she gives me at these events and won't take a penny in recompense. Knowing she likes makeing quilts, last year I gave her a dyeing kit and cotton fabric for her birthday, and we got together to do the mordanting.

Now, I'm a passionate advocate for wool, British in particular, so I had to get out all my books to check how to do the mordanting properly! I knew I could do it in a one stage process, using aluminium acetate, but Lorraine wanted to do it "traditionally" with the everything in her "kit". So we opted to follow the alum, tannin, alum process. The tannin component was Amber-M (Oak Gall).

I was really impressed with the fabulous colours we got. They are so rich.

This image is of the colours before Lorraine pressed the fabric, but even then they are really beautiful. From Left to Right they are:
Ganges (Dhak), Amazon (Annatto), Rhine-M (Red Lac) and Rhine-S (Purple Lac).

Gift Idea No. 9!

This is a really simple idea, following on from the last post.

For spinners who've never tried natural dye extracts (or even dyeing!), why not buy them one of the substantive dyes that contain tannin. These are Amber-M (Oak Gall), Kango (Myrobalan), Pacific (Pomegranate) and Thar (Cutch). One 25g packet of any one of these dyes will dye 500g of fibres and shouldn't need any other mordant, such as alum and cream of tartar and so can be done in one step:

• Weight your fibres in their dry state
• Wet them out (if using tops curl them into a bundle and secure end round the bundle then immerse in warm water with a squirt of washing liquid
• Weigh up to 5g of dye extract for each 100g of wool yarn.
• Dissolve the dye in a small amount of water, heating if necessary to aid the dissolving or add a "grain" of washing soda.
• Top up the water so that it will be sufficient to cover your yarn when it's in the pot.
• Add your wetted out yarn to the pot.
• Slowly bring to a simmer over about 45 minutes.
• Simmer for 45 minutes.
• Cool in the pot then rinse thoroughly.

For as little as £1.30 for the dye and your fibrey friends own fibre what more could they want!

Hot News!

Hi all

I wanted to let you know some exciting news. Five of Pure Tinctoria's natural dye extracts gave been given their Global Organic Textile Standard (GOTS) which is really wonderful and the remaining dyes are due to get their GOTS in the next few months, so keep an eye out for that post, too.

The five dyes are Amazon (Annatto), Amber-M (Oak Gall), Indus (Madder), Kango (Myrobalan) and Thar (Cutch).

We have also been able to reduce the price of Amazon and Indus recently so please got to the Pure Tinctoria website for details.