I work on cotton which has been pre-soaked in a soda ash
solution. The soda ash functions as the
binding agent, fixing the dye molecules to the fabric.
Procion
MX dye comes as a powder and its dust is toxic to breathe, so use a good filter
mask when mixing dye with water to make concentrates.
I like to make my dye up in squeeze bottles, 1/2 cup at a time. Dye concentrate lasts months in cool temps,
but does loose strength over time. Once
the dye is exposed to soda ash however, it exhausts rapidly – 15 minutes. I work with small amounts of dye at a time so
my brushes which are contaminated with soda ash from the cloth don’t exhaust my
dye too fast. I use little water color palettes to paint out of.
Dye
can be thickened for applying with stamps, and to control the flow of color on the cloth.
Prochem makes a dandy print paste which lasts a very long time once you
mix it up with water. Follow the
directions on the package.
Once you have good, thick print paste mixed up, you add dye
concentrate at a 50/50 ratio or more. A plastic fork is the best tool to blend paste with dye. A consistency
like honey is perfect for applying to rubber stamps. I use a foam brush to pat the thickened dye
onto the stamp.
In order to produce good strong color, the dye must be
allowed to cure for 24 hours. The
moisture has to be held in the cloth and the room temperature must be above 65
degrees during curing. To help the water
be ‘wetter’, urea is used. Urea mixed
with water is used to thin the dye paste and to lighten values when using un-thickened
dye.
Brushes for applying dye should be synthetic only because of the soda ash tends to destroy natural bristle brushes over time. The best surface to work on is a work table covered with two layers of felt and an old sheet over that. Plastic is a nuisance underneath your work but you will need it to cover your paintings while they cure.
I hope this is helpful to readers and sparks interest in trying this endlessly fascinating medium.
How fascinating. I had no idea how much is involved technically. Thanks Sus for putting this post together. I will save it in my Evernote for future reference.
ReplyDeleteand now ... to work ;-)
ReplyDeleteVery interesting--the part about using soda ash on the fabric itself explains so much I didn't understand about what mordant to use! Thanks for sharing, Sus :)
ReplyDeleteHi Sus, finally I can get back to reading my favourite blogs!
ReplyDeleteThank you for these photos and explanations to your dyeing techniques. It's always interesting to see how people work. I think I've learned that my casual dyeing ways may be all too casual for longevity of colours. Hmmm. I'll be reading the books you suggested! :)