Etching your enamel will give it a silky, matte finish. Add more visual interest by spot etching, or only etching certain parts of the enamel. For instance, in these photos, I have etched only the opaque black enamel, leaving the transparent pink enamel glossy.
First, I use a diamond bit to grind off any pieces of enamel that are sticking out. Always grind enamel with water to avoid cracking off chunks of enamel. I used Etchall brand etching resist gel, which I carefully applied with a small brush. It goes on milky and dries to a clear plastic in about 10 minutes. Then I generously applied the etching cream to the black portions of the piece. This time I used Martha Stewart brand etching cream, but I have also used the Etchall brand successfully. I waited the required 15 minutes for the etch to work and washed the entire piece in water. I used a tweezer to remove any remaining gel resist on the piece; an easy process because it usually comes off as a whole. I love the contrast of the matte opaque black against the glossy transparent enamel!
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