I have some full-size cotton thermal blankets I want to dye in a graduated blue-green stripe pattern, but I am stymied as to how to fold them so the folds aren't too thick to be fully penetrated by the dye. Also, should I soak them in soda ash solution and dry them before folding them? Would pinning the folds in place help me keep them manageable until I can tie them? Maybe I should practice on something smaller first. Thanks!
You can always work dye in. Put that nozzle right into the folds, let it soak in, then apply more. Repeat as necessary. Squeezing also can help.
Regarding the soda soak--there are many differing opinions. I generally fold damp, soda soak, the allow to dry. Either that or use activated dye in which the soda ash is added directly to the dye solution. There are many ways and each must find their own.
Having an extra set of hands can help amnage large projects.
As far as practicing with something smaller--good idea.
Steve