I wanted the warm temps on my driveway to batch the dyes. The rain cooled it a bit and disappeared the sun, but I don't think it really mattered. To keep the rain from diluting the dye, I covered the cups with the plastic bag I used on the table.
The technique is from Nina Marie Sayer and can be found at:
Red Solo Cup Dyeing
Nina Marie explains the process in easy to understand terms. All you need is about an hour. That will allow you time to prepare the area, mix your dyes, create your dye pots, set it to batch and clean up. One hour, that's all.
As the process went along, I kept thinking, I need to take photos.
Did I? Nope.
But I did get the best part, the finished pieces!
My only complaint is the light colors. I soaked the unbleached ecology cloth in soda for 2 hours. And I also used soda and salt in the dye mix. So I may try again this week and use more dye in the pot. I didn't measure, but I did use more than a teaspoon in each cup. Hmmmm.......