Matte enamel and LOS
I have used LOS with glossy enamelled pieces (and they are fine), but have not tried with matte enamel---does the LOS affect the matte enamel?
I'm not sure what you are talking about here.....but if you use a shiny lacquer on a matte-finished piece, you'll make in shiny. Shiny is not the best look for everything, so if you've had success using shiny lacquer on your shiny enameled pieces, I would imagine that you would have success using a matte-finish lacquer on the matte finish enameled pieces. The below earrings I made, have the matte-finish lacquer on them.
And these have a shiny/satin lacquer coating.
If enamel is coating the entire piece, I'm not sure what benefit applying a lacquer would bring. I've never applied lacquer to glass...only to base metals.
As to adding a liver-of-sulfur patina, that surface treatment (patina) is added before the lacquer coating. A lacquer coating on the metal will prevent the LOS from reacting with the metal as it cannot come into direct contact with it. When using lacquer as a metal protectant, I...
4. dip in acetone
5. apply the lacquer
I also never apply lacquer to an ear wire where it makes contact with the ear piercing.