So here is my bundle going into the container. I have spritzed the cloth with vinegar but I will add more vinegar and water to the basic. You can see some small bits of rust from other flaking bits around the tub. some artists don't like to work with rust because it is corrosive and supposedly continues to degrade the cloth. I don't have such qualms. Everything deteriorates over time and this is just a process. It will take several days out in the sun and I will turn the bundle several times to try and encourage rust marks all over.