I have been on a medieval market this weekend and have dyed wool yarn with my friend Janni. I had prepared some wool from home with alum and also brught some that had not been treated. This was to see how different the wool took in the colour.
This is the result from the "hard" work.
I dyed two baches that have been treated which I´m going to use for "nålebinding"/"needlebinding". And the one in the middle that hadn´t been treated with alum is a very thin embroidery yarn. There is a clear difference in the two types of yarn but I´m very excited about both colours. And I were very happy to see that the embroidery yarn took in so much colour. So for the future I´m going to dye some more for embroidery purposes.
We got a lot of response on your dying and people really were interested in hearing about natural dying. Though some kids thought that we were making red pasta with blod :0).