indigo vat disposal

�2�(�>��T� When she told me that the small amount of indigo still resulted in a deep blue color, I did some tests myself using both “thiox” and sugar as reduction agents. We are healthy and thankful for that. A student in the class was especially interested in gathering local plants for use as a dye source. I’ve been told that the freshness of the plant material matters for purposes of fermentation.

Then, after about 30 days the color reverted to a clear blue again. Warm climates are the natural environment to make and maintain these vats. Upcoming: On July 13 I am presenting a Zoom webinar, entitled Colors from the Garden, as part of the John C. Campbell Folks School’s Appalachian Traditions Series. An additional issue is that many of our local plants are acidic. We added the hydrated indigo and the lime.

The vats that use large quantities of lime (calcium hydroxide) also seemed to be presenting a challenge with “fading” issues. Several years ago I began growing small amounts of indigo in my garden, simply to understand it. This is what causes the bad smell and can affect human health when the gas is inhaled. In 1869 it was the first natural dye to be produced synthetically. And finally, and maybe most importantly, fermentation seemed like the ultimate in understanding indigo. We love to give it two days to really get ready for dyeing!

We substituted 1.3 grams of lye (sodium hydroxide) for 1 gram of lime (calcium hydroxide). xref This vat has been dyeing well for approximately 3 years. Both leaves were ground fine before applying them to the textile. That said, Texas is hot!! Thank you so much! I do have Michel Garcia’s DVDs, maybe I missed his reference to this? Will “seeding” a new vat with a small amount from an older, reduced vat speed up the reduction process?

I was given a woad ball and added that to one of my vat experiments and it definitely speeded up the fermentation/reduction.

The blue dye from the vat was clear and strong. What is the effect of additional indigo plant material when added to the vat?

This will introduce Carbonic Acid (dissolved Carbon Dioxide) into the solution, neutralizing the pH and converting most of the Lime to Gypsum. ( Log Out /  It’s black walnut season again in eastern United States – and soon the trees will be releasing their nuts and husks from the tree. startxref Joy and I are teaching right now at Penland and continuing to work on new solutions to old problems. Joy cautioned against heating too much, which would turn the liquid brown as a result of oxidation. This helps me to explain how indigo in denim looks vastly different than the indigo dyed goods that I produce to people.

I wanted to experience it. I was introduced to TUD (thiox / thiourea dioxide) by Patricia Black who cautioned on the health risks insisting that participants use a full respirator mask.

Stir to dissolve. I know many dyers who use either sodium hydrosulfite (“hydro”) or thiourea dioxide (“thiox”) to reduce their vats. I’ve a question. 3 parts fruit sugar (fructose) -henna can also be used Thank you for this very informative information. South Carolina leaf on left, compared to the larger symplocos leaf from Bebali. All Rights Reserved. He tested fabrics from his own company as well as those from others. Donna Hardy will also do a post symposium workshop at Cloth Fiber Workshop. H�\��j�0��~ Allow the textile to oxidize overnight and then soak it in water for several hours or overnight. The Indigo Dye Vat: Prepare the indigo vat 1) Pour about 2½ litres of boiling water into a stainless steel saucepan or stock pot.

Can I leave a vat unattended for a week? 3 parts calcium hydroxide. The process of making the reduction vat is the only difference. As part of the experimentation and study, I have successfully made my own wood ash lye and worked with both soda ash and potash as alternatives. Thought readers might be interested in a further discussion about TUD. The facility I have used for a number of years was a community college and I only had access on weekends and was not able to leave a vat there over any length of time. Thank you very much for sharing this information.

Cheers Jane. Dried Polygonum tinctorium leaves. There is one important omission on pages 169 and 170. no mordant, 2.) 0000023667 00000 n Morton’s company specialized in producing woven furnishing fabrics for curtains, carpets, upholstery and tapestries.

Four different values of indigo dye from the fermentation vat. Greetings Catharine, Gale here.

I described this to Joy. The purpose of the pickling lime is to make the vat alkaline and help dissolve the indigo. It’s always good to take a class though, so that you can actually go through the process with someone who knows the process. Sent from my iPhone – Please excuse any typos, Joy and I include these vats in our book: The Art and Science of Natural Dye and they are also included in the Slow Fiber Studio DVD’s with Michel Garcia.


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