Meanwhile, I am pulling pigment from my madder exhaust pots. Remember the solar dyeing? Using recipes in the book Natural Colorants for dyeing and lake pigments I am continuing to pull color out of the madder exhaust pot to store for future use.
Remember the soy milk painting on silk? Not exciting color from my lichen and weld on the left but the technique worked. The brighter color on the left yielded from Daniel Smith watercolor pigment.
This particular formula used the dyestuff solution, potassium carbonate and potash alum. When dissolved and stirred into the exhaust in the proper order it pulls the dye molecules and drops out of the water.
This separation process takes a few days as you “wash” your precip and refilter it again. In my case I’ve used it to paint on silk scarves or on warps with soy milk. I’ve seen mention of other dyers using citric acid to use for immersion skein baths but I have not done so. And of course, painters reconstitute with linseed oil and other concoctions for painting. To each their own!
Thanks to Glenna, Donna or Diane, one of you pointed me to this book to move further into the rabbit hole of storing pigment using this book and other class notes from Michael Garcia & Catherine Ellis. Truly a dye brain trust I am grateful to be able to access. One does tend to mutter over the dyepot and it is good to have company in the journey.