Rusting

I have made a little rust bundle of an indigo dyed handkerchief. Didn't look too good so now over dyed with rust. I wrapped the hankie and a piece of calico around a rusty grid I have saved for this purpose. Soaked in a vinegar and tea water. Left over night and now for the reveal

Now I will wash and rinse really well in bi-carb soda to neutralise the rusting process and stop it from further rusting. I want to try with only tea in the water as it gives blacker colour as the tannin in the tea reacts with the iron, and have no vinegar- next time.