I have used "Plasti-tac" for many years when I used to display. It's white and
I found it in a Stationery store. you stretch it several time to activate it
and then put a small piece on the shell, as it cools it holds tight. I remove
it by use a another activated piece rolled back and forth across the shell. The
blue stuff colors the shell. Plasti-tac doesn't work well if you have excess
oil on the shell. It will break down over time..
Bob
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