Steps: 1. Cut 40 strips of copper sheet into 3/4" x 36" strips.
2. Bend all the copper strips 1/2 inch on one end completely over (figure A).
3. Lock two strips together at a 90-degree angle by pinching the folded ends together with locking pliers (figure B).
4. Lock 17 strips along the bottom strip by pinching the folded ends over the bottom strip (figure C).
5. Basket weave 11 strips one at a time over and under the vertical strips (figure D). Lock the strips to the side strip by pinching the 1/2 inch folded end of each strip over the side strip.
6. Mark a pencil line 1/2 inch past the last strip across all strips.
7. Cut off the ends of the strips along the marked line using a pair of tin snips.