I would be cautious with the 2 minute immersions – there might not be enough time for the dye to really penetrate the fiber. Thanks so much for sharing your journey with so many. the dyes reaches all layers of the fabric. Silk or wool yarn or fabric. Thank you for your indigo knowledge! Your final point concerning pH and damage to cuticles would in my case results in inadequacy of felting capability. I’m sure that the alkaline environment is hard on them but It’s a reasonable price to pay to keep the vat viable through the winter. A rare green most likely over-dyed. If you have earlier post about Natural Dye I would love to get them! ?thanks!Leigh, Once again, Catharine such great information. Thank you for sharing your experiments. So I left it soak all night in the vat, and yes, I confirm that it makes a big difference. Glad that the post was so timely! Thank you so much for all the helpful replies to the comments…they are so useful.

I realized that this approach might be expedient for production dyeing and fit the rhythm of the studio.

Thanks so much. I would suggest you try both and compare for lightfastness. See you in Nagoya, I’ll search you out and say hello. I’m glad to hear this was informative. Cotton, itajimi shibori sample, multiple immersions (20 minutes each), Cotton, itajimi shibori sample, single immersion, (24 hours), lightfast test: cotton (4 weeks exposure to direct sunlight), lightfast test: wool (right side exposed to sun 4 weeks), lightfast test: silk (right side exposed to sun 4 weeks), https://www.amazon.com/Aqueon-Pro-Adjustable-Heater-50W/dp/B003C5JNXK/ref=pd_sim_199_5?_encoding=UTF8&pd_rd_i=B003C5JNXK&pd_rd_r=NS8D3PGG3SD0HW9TVP93&pd_rd_w=3ZAJq&pd_rd_wg=4nbNm&psc=1&refRID=NS8D3PGG3SD0HW9TVP93. I have a fairly large vat, a big 1 metre high terracotta pot, so I am not too worried about dye distribution. I am thinking 1200 years ago, Tang Dynasty, and how production of indigo dyed wool was most prevalent in felt carpets. What kind of vat did you make?

I am so pleased to have all this information and all your research results in your blog so easily accessible. That is not enough time! I’ll have to rig up a peculiar system for suspending this particular kind of job somehow.

When the immersion time was increased to 24 hours the dye penetrated ALL the layers – like magic. The boiling assures that any unattached dye is removed and Joy indicates that it actually helps the indigo move deeper into the fiber. More time in the vat allowed complete penetration of dye throughout the textile. When using mordant dyes or fiber reactive dyes, the dye usually penetrates through the layers. Thank you for sharing. I guess that if you do ten one hour immersions it wouldn’t be wildly different from one ten hour immersion, but I’ll test it and see. Always good to hear from you Barbara! Indigo dye is made through a long and delicate a process of fermentation using indigo … Bring on the arc welder maybe….

The textile is gathered with the woven “stitching” threads, making a compact “package”, and exposing the outside pleats of the textile to the dye uniformly. I was actually dyeing an itajime piece when your post arrived to me. I assume it does the same as vinegar in your method? Natural Dyes - Earthues Indigo Dye Kit Earthues Natural Indigo Dye Kit Journey into the world of blue, with natural south Asian Indigofera Tinctoria. I learned a lot! > When I ask the dyer how long the textile was immersed in the vat the > response is usually “1 or 2 minutes”. Dyeing with Indigo is a process with many variables, and as with any new process, common sense dictates that you always TEST FIRST if you have something specific in mind. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Change ), You are commenting using your Facebook account. So glad to hear you and Joy will be teaching at Maiwa.

Our knowledge grows…. One of the problems with citric acid, is that it does not really dissolve and rinse out. Catherine, do you massage the bundle during that 24 hours? When using mordant dyes or fiber reactive dyes, the dye usually penetrates through the layers. Thank you Color Ashram for creating this beautiful video. Better yet, Aqueon has different wattages for different sizes of vats. ( Log Out /  As will everything, experimentation with your own materials will tell you what is best. That is exactly the one I use. When you say 20 hrs. Hi Catharine, I found this article so interesting. I don’t think there is enough active fermentation to break the glass but you really don’t need a tight lid. Thankyou. I find that they usually last through a winter season (or two). Enter your email address to follow this blog and receive notifications of new posts by email.


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