I’m redoing my indigo fermentation vat this weekend. It’s been a while in coming. I emptied it out (25-30 gallons) about 2 months ago when I was redoing a fence line that it sat along and it needed to be moved. At the time I was also having some issues with fruit fly larva in the vat and wanted to have a fresh start and see if I could solve that issue.
The vat will take at least a week to ferment to a usable state and in addition I need to receive an order of ground indigo from Cheryl at Aurora Silks. Coincidentally, she is having a sale on the 1 Kilo size ground natural indigo and offers free shipping. I only had 4 oz on hand so made the vat up with that to get it started and will add the rest of the indigo when it arrives in a couple of days.
I am adding a fine mesh cover to the top of the vat since the lid to this container is not a complete seal. Additionally, I am making a large net bag to drop into the vat while dyeing to keep all the organic materials and sludge to the bottom and away from the cloth as I work. It’s really only an issue when working with larger open weave fabrics which I seem to use a lot these days. It saves having to pick out the particles by hand or resort to lots of water wasting rinsing. Water is precious here.
When I disposed of the old vat I balanced the ph with some citric acid down to about 7 and used the liquid on the ornamental drought tolerant landscaping. The rest of the sludge in the bottom I added to the compost and was ready to start again. This vat had been in use for 4-5 years.
I am adding some video of the process of this new vat to the student forum for the online indigo workshop I have in my shop. Here is a little bit of day two progress…
August 6-7 is the final summer indigo workshop at the Japanese American National Museum. Signups are through the museum here.
Last time this is some of what participants did…
And likely,since Jude had been busy with moons, folks have been ordering the moon assortments which has kept me and my studio helper hard at work…
nice to see you in the blue again
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nice to have the fermentation vat back!
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looking forward to doing your online indigo course this summer in the Land Down Under once the Crow Show has flown!
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cool! I just posted a test dip in it this morning- already blue! very quick for a 30 gallon fermentation vat- just 3 days!
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It is amazing what those little squirrel hands can do, that is presuming your student helper in the last photo?
Xo
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