Question: How do I make sure that the melamine doesn't swell up with moisture when making a concrete countertop mold?

  Options: 
 A. Spray spray adhesive on the exposed edges, then put down clear packing tape on it. Trim the excess packing tape with an exacto knife.
 B. Spray spray adhesive on the exposed edges, then put down clear packing tape on it. Trim the excess packing tape with an hammer.
Answer: A