Please choose the correct solution to the question: How do I make the mold for casting my coaster ?

Solution1: Use an old laminate shelf, cut a  12" by 12" square from it and four 1" by 12" strips that will be glued to the sides of the square with super glue.

Solution2: Use an old laminate shelf, cut a  12" by 12" square from it and three 1" by 12" strips that will be glued to the sides of the square with super glue.

Answer format: solution1/solution2