I believe there is a brass/metal polish called, of all things, Brasso. I found mine in a hardware store.
Good luck, Steve Madden [EMAIL PROTECTED] wrote: > > Hi all. > > I need to brighten the dark patina on my large bronze focusing dial for a > photoshoot. I do not want to use anything abrasive, especially because I > do not want to accidentally scratch the mirrors or abrade the cast bronze > surface. I have tried Tarn-X and muriatic acid. Both brightened the dial > surface very quickly, but just a few minutes later the surface would darken > intensely, despite copious rinsing and even trying a light wash with baking > soda. Household ammonia was worthless. Nevr-Dull cottony material works OK > but slowly, and I go through the stuff pretty quickly. It has a mineral > spirit/wax base, but I don't know what the actual reducing chemical is. If I > knew, I could try to make a recipe that might suit my needs a little better. > > Does anyone on the list have a favorite non-abrasive method for brightening > bronze (or brass)? > > Bill Gottesman > - -
