The 1939 edition of Fortunes in Formulas by Hiscox and Sloane has a page describing how to blacken brass chemically. Contact me off line if you would like a jpeg copy of that page. Marty Magid: [EMAIL PROTECTED] _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
