Thanks

I don't chemically darken myself. The metal looked pretty clean/new on the Yuma shoot. Although I have seen some great results where people have used aluminium black. Personally, I just dull the surface with scotchbrite pads and steel wool, but that's all. Then I knock the paint back with the pads once it's cured. I've considered trying the Birchwood Casey on just the emitter (then knocking back before stenciling). I could try it as an option for people to see what they think before the run goes ahead maybe?