Sunny Day Mac! Please check out the following web site for a product that can be used to blacken stainless steel at room temperature. I have no idea how good it is or how much is required. You can contact the company for further info.
http://www.caswellplating.com/kits/black.htm Scroll to the bottom of the page. Happy Dialling! Carl Sabanski www.mysundial.ca --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial