Bought the Martha Stewart tape, cut a strip of the 1/4", and placed it in a demisphere mold (I can't imagine doing this in one that is more "enclosed," such as a dome). The first time I added colored cocoa butter with a finger. It got under the tape everywhere, total mess. Second time:       On the second try I pressed the tape as firmly against the polycarbonate as I could, pressed it again, then sprayed with airbrush. It's the closest I have ever come to success
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