This rust cone I have given away twice and it comes back unused so its time came to try an experiment with watered down bleach.
The fabric was about 20" (51cm) wide before pulling the resist threads.
So now I think I'll tie on a couple of metres of navy blue cotton which I know bleaches out to purple and see what I get before putting on a long warp. This is all unmercerised cotton.
Click on all pics to bigify.