The other day I thought I would try dying some wool with some really old coffee beans and some tea that I didnt like! So I googled it and figured out it is just like any other dye! But I will share with you!(I also dyed other wool using some BLUE food colouring – you will see in the pictures)
Get some warm water and add some vinegar. Put your wool in and let it soak for a while.
Make the dye bath. So take what ever it is, Coffee (from the coffee pot is the easiest) or Tea (steeped and strained) and add some vinegar (Vinegar acts as an acid so help animal fibres absorb colour). You may need to add some more hot water depending on the strength of the colour or amount of wool you are planning to dye.
Add the wool from the vinegar bath (try not to bring all the waterover by gently squeezing some out) and heat on the stove. Make sure your wool is covered. *Do NOT let your pot come to a boil – it can cause felting to the wool).
When the wool is at the desired shade (it may lighten once rinsed) take out, rinse in similar temp water slowly making cooler and spin in a salad spinner. *Some may wish to add a bit of soap for a soap rinse as well*
Lay out to dry in the sun. You will know it is dry when it is not cool to the touch.
NOTES and TIPS:
I noticed that the tea and coffee did not turn out as dark as I had hoped. I think that will differ from different types and strengths.
All the colour did not absorb like other dyes do, so that was not a sign of it being finished. I think I left it for 30 mins.
I found dying with onion skins MUCH easier… with a darker colour. BUT it didnt smell as nice 🙂
I dont know if I will do this type much. Although I think it will look AMAZING carded with my onion skin dyed wool and natural brown wool!!