Hi, I'm casting pieces of lace applique in yellow brass and love the rich warm yellow colour of the castings when they're freshly casted. However, the colour changes to a lighter, not-so-rich tone when I tumble them with steel shot. I am only guessing that it is the tumbling process which affects the colour. Any suggestions of how I should approach finishing the cast lace pieces and retaining the colour? I seal the cast pieces with a clear lacquer to prevent/delay tarnishing but have been advised to have them gold plated. Any thoughts and advice will be appreciated.
Warm wishes from South Africa where summer is finally here!