I brought the plate home and was inspired to get my ferric chloride tank going again so that I could rework the brush. My tank has an outer tank of water which is heated, this speeds up the biting process, I also have citric acid added to my ferric, it gives a cleaner bite. I made an extra piece from deeply bitten aluminum and re printed using viscosity inking for the aluminum plate.
Happier than I was but not completely satisfied! But it is this bit that really interests me, I can see myself dispensing with the brush...watch this space.
I apologise for this post, it has been a bit technical, it has been aimed at my fellow non toxic etching enthusiasts. Let me know what you think?