Please choose the correct solution to the question: How can I safely cut sheet metal with a hacksaw?

Solution1: Cut sheet metal cleanly with a hacksaw by sandwiching the metal between two thin paper towels. Mark your pattern on the front paper towel, clamp the sandwich in a vise, then saw on the marks through the entire sandwich at once.

Solution2: Cut sheet metal cleanly with a hacksaw by sandwiching the metal between two thin boards. Mark your pattern on the front board, clamp the sandwich in a vise, then saw on the marks through the entire sandwich at once.

Answer format: solution1/solution2
Answer: solution2