Doug B. Wrote:  (11/14/16) ”Hello Mr. Worden, What would you recommend using to color 22 gauge mild sheet steel blue?  I’ve seen a few of your videos showing stainless but I’ve not seen anything for mild steel”. Thanks, Doug Answer From Bill: Hi Doug, The Most Popular Blue Patina Choices, in Descending Order, Are:   … Continue reading FAQ: RECOMMENDATIONS FOR BLUE PATINA/S ON MILD STEEL